What geological evidence could there be for the presence of an early ocean?

Select one:

a.
Marine sedimentary rocks can be dated back about 4 billion years.


b.
The iron contained in the rocks combined with the oxygen to form reddish iron oxides.


c.
Oxygen is needed to make ozone, a molecule made of three oxygen ions, O3.


d.
No animals would have been able to breathe in Earth's early atmosphere.

Answers

Answer 1

Answer:

i think the correct answer is D


Related Questions


1. Distinguish living beings from non-living things on the basis of the following
A. reproduction
B.energy production
C. growth

Answers

Answer:

reproduction. plants undergo mitotic division while animals meiotic division

energy reproduction. plants produce or manufacture their own food through photosynthesis while animals depend on plants that's they convert the energy from plants (carbohydrates) into proteins vitamins etc

growth. growth in plants in localized..it involves growth of part tissues like roots stem leaves while in animals it is diffuse that's it occurs in every active cells.

Explanation:

I HOPE THIS IS HELPING.

What do biologists call the specialized cells in the nervous system that detect heat, pressure, and other environmental stimuli? A. first responders B. mitochondria C. receptors D. organelles​

Answers

Answer: Receptors.

Explanation: Receptors. Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus.

Receptors are the specialized cells in the nervous system that detect heat, pressure, and other environmental stimuli.

What are receptors?

Receptors are proteins, usually cell surface receptors, which bind to ligands and cause responses in the immune system, including cytokine receptors, growth factor receptors and Fc receptor.

Moreover, receptors are bound up with functions such as cell activation, cell adhesion and signaling pathways. These functions play a role with the help of receptors.

Therefore, cell activation including T cells, dendritic cells, B cells, granulocytes and NK cells, is an important process in innate and adaptive immune system.

Learn more about receptors:

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The theme of fly for your life
HURRYYY!!!

Answers

Answer:

gunship

Explanation:

Which of the following is NOT produced by most plants?

A.Fruits

B.Roots

C.Leaves

D.Poison

Answers

Answer:

D.Poison

Explanation:

Poison is not produced by most plants.

Poisons are dangerous to plants,even a people and animals

Brainliest me thank for later

Why does a cis fatty acid have a kinked shape?

Answers

Answer:

Steric hindrance in the cis orientation causes the chain to take on a more bent shape. Most natural unsaturated fatty acids are in the cis conformation. As can be seen in Figure 2.327, the cis fatty acids have a more of kinked shape, which means they do not pack together as well as the saturated or trans fatty acids

Explanation:

what objects could we find in the troposphere​

Answers

Answer:

water vapor, dust and ash particles

Most of the water vapor in the atmosphere, along with dust and ash particles, are found in the troposphere—explaining why most of Earth's clouds are located in this layer. Temperatures in the troposphere decrease with altitude.

Which is an example of a limiting factor that is dependent on population size?

Answers

Answer: Food can be an obvious answer because people will not survive without food so they will die. And death means there will be a decrease on population size. So food can be a limiting factor that is dependent on population size.

Answer:

A limiting factor that depends on propulation size is called a density-dependent limiting factor.

Density- dependent limiting factors include: competition, predation, parasitism and disease.

.・。.・゜✭・have a nice day・✫・゜・。.

cellular respiration
.
help with chart

Answers

The arrows mean that it belongs in that box and in the box where the caption is in.

Meaning that you should write the same answer in both boxes.

Isomers are molecules that have the SAME molecular formula, but their atoms are bonded in a different way. Draw the 5 isomers of cyclopentane, C5H10 using Line Structural Diagrams only.

Answers

Answer:

1.methylcyclobutane

2.1-pentene

3.2-pentene(which can be Cis or Trans)

4.1,3-dimethylcyclopropane

5.ethylcylcopropane

Explanation:

What evidence could you collect to confirm that the mutation identified in Sam’s DNA causes symptoms of RP?

Answers

Answer:

By injecting a functioning copy of the gene mutated in Sam's DNA in the cells of his eyes. Then seeing any reactants damage the cells using a microscope.

Explanation:

The evidence that could you collect to confirm that the mutation identified in a patient's DNA causes symptoms of RP is a model organism that can be used to confirm the mutation.

What is Retinitis pigmentosa (RP)?

Retinitis pigmentosa (RP) is a hereditary condition that results in cell loss and breakdown in the retina, which increases light sensitivity and causes tissue lines at the back of the eye.

The mutation is a disorder that is caused by the genetic modification of genes and chromosomes. This causes genetic disorders in the organism, and these defects may be lethal.

These diseases are hereditary, which mean they are transferred from parents to children and some genetic disease can be detected in the fetus of the mother.

Thus, a model organism, identified in Sam’s DNA, causes symptoms of RP.

To learn more about evidence of disease, refer to the below link:

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Sorry I have a slow mind... What word do weather forecasters use to describe water vapor that has gathered in a cloud?

Answers

Answer:

condensation

Explanation:

Condensation is when the water vapor becomes a cloud

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1 Both viruses and cells have - A Lysosomes B Mitochondria C Chloroplasts D Proteins​

Answers

Explanation:

I think chloroplasts iam not sure

Path-breaking medical procedures have begun to pay attention to how microscopic entities aid or hinder bodily health. For example, fecal transplants have helped cure chronic digestive ailments of people who have suffered for years. These new procedures treat the body not as a separate, contained biological entity but as a complex: ___________

a. biomedicine.
b. anthrobiotic environment.
c. personal biosystem.
d. human microbiome.

Answers

Human microbiome that is as complex entity of all the microorganism found in the entire body structure of all living organism and the exact location where they are found.

Fecal transplants is idea for replenishing of good bacteria in the body due to resistance from prolong use of antibiotics. It is specifically for treatment of resistance of antibiotic therapy due C. difficile colitis.

In patient  above 65, infected with  C. difficile colitis and  with resistance to antibiotic especially oral vancomycin, fecal transplant is applied to  effectively cure this.

The transplant is conducted through the Colonoscopy. Where the fecal is discharge into the colon  as the Colonoscope is withdrawal from the colon

.

Since natural  good bacteria are present  in fecal and have no effect on the good bacteria in the body, this procedure increased the total number of bacterial(microbiota),by stabilizing the the microbiome and curing the patients.

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Human embryonic development is the development and formation of the human embryo. It is characterized by the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the human body entails growth from a one-celled zygote to an adult human being. Choose ALL of the statements that correctly describe stages in human embryology and gestation.

The normal period of gestation is about 40 weeks.

The germinal stage refers to the time from fertilization through the development of the early embryo until implantation is completed in the uterus in about 21 days.

The stages of human development include, in order: zygote, blastocyst, embryo, and fetus

A blastocyst, if untouched and allowed to remain implanted, will eventually develop into a morula.

Changes to the form of the embryo come from differentiation and growth.

Answers

The statements that correctly describe gestation are: the normal period of gestation is about 40 weeks; the stages of this process include: zygote, blastocyst, embryo, and fetus; and changes to the form of the embryo come from differentiation and growth.

The gestation period in humans lasts about 40 weeks and comprises different stages and processes from conception until birth. The main stages of this process include:

Zygote: Fertilized ovum.Blastocyst: Cluster of cells that is the result of the zygote going through cell division.Embryo: Unborn human that is still developing, usually before the 8th week of gestation.Fetus: Unborn human in development after the 8th week of gestation.

Moreover, this process implies differentiation as cells specialize for specific functions, for example, muscle cells or nerve cells, and growth as the number of cells increases and therefore the embryo or fetus increases in size.

Learn more about embryo in: https://brainly.com/question/1673695

Answer:

Many different types of cells make up the human body. Therefore, it is important for cells to differentiate to form different types of tissue. The tissue can then combine to form different organs and systems that carry out specialized functions for the human body.

Explanation:

Imagine that head shape is controlled by a maternal effect gene. The dominant h allele produces a oval-shaped head, while the recessive h allele produces a square-shaped head. Imagine that a woman has an oval-shaped head. Her father has the h h genotype. What proportion of head phenotypes do you expect to see in her children

Answers

The woman’s genotype is Hh because her father has the genotype hh. If the woman has children with a person who’s genotype is HH, you see 100% oval heads, you’d have genotype HH and Hh. If the woman has children with a person who is Hh, you expect 75% oval heads and 25% square heads with the genotypes HH, Hh, and hh. If she has children with some who is hh, you’d expect 50% oval, 50%square with genotype Hh and hh. To solve, use punnet squares!

The vestibulocerebellum helps regulate _________; the spinocerebellum helps regulate _________ and the cerebrocerebellum helps regulate __________.

Answers

The vestibulocerebellum helps regulate balance and eye movement. Moreover, the spinocerebellum helps regulate body and limb movement and the cerebrocerebellum helps regulate in planning movements.

The vestibulocerebellum is a region of the cerebellum which involved in balance and body position in space.

The spinocerebellum is involved in controlling lateral descending systems in order to regulate distal limb muscles.

The cerebrocerebellum is involved in motor planning by connecting the motor and premotor cortices.

Learn more about the cerebellum here:

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Darwin's finches evolved on an island. What is the main reason that islands often provide good examples of evolution?

Answers

Answer:

They allow for automatic biogeographic isolation

HOW the muscular System interacts with the nervous system AND the skeletal system.

Answers

Answer:

Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.

Which organism receives the most energy in the food chain

Answers

Answer:

humans

Explanation:

this list of characteristics describes organisms in the _____ kingdom

Answers

this list of characteristics describes organisms in the united kingdom

. What is the first step of thermonuclear fusion within the Sun to form helium-4?
The fission of hydrogen to form protons and neutrons.
Two lithium atoms, each with three protons and three neutrons, undergo fission to form hydrogen atoms with
Two hydrogen nuclei, each with only one proton, fuse to form deuterium, a form of hydrogen with one protor
O Electrons and protons fuse to form the nucleus of a helium atom.

Answers

Answer:

a nucleus of Deuterium (2H)

Explanation:

formed from two protons with the emission of an antielectron and a neutrino. In the basic Hydrogen fusion cycle, four Hydrogen nuclei (protons) come together to make a Helium nucleus.

Marie Curie was a famous French-Polish scientist known for her pioneering research on radioactivity. Her work not only brought her fame but her death as well; she developed aplastic anemia due to radiation exposure. She experienced recurrent and prolonged infections (viral, bacterial, parasitic, and fungal). Explain why she suffered from recurrent infections. Be sure to mention the different types of WBC and the relation to the various infections, and the reasons why she lacked the cell-mediated and the humeral response.

Answers

Answer:

because of continous radiation exposure, bone marrow got destroyed and the ability to produce immunity is reduced

granulocytes

monocytes

nk cells

etc

If we have 46 chromosomes, about how many feet would that be? (Show some math work)

Answers

Answer:

276

Explanation:

Chromosomes are about 6 feet long.

46 x 6

= 276

How have golden eagles adapted their behavior for living in temperate grasslands?

Answers

Answer:they build their nests on the ground.A few of these adaptations are: Some animals, such as bison, have broad, flat-topped teeth and digestive systems especially adapted to feed on grasses. Many prairie animals have front legs and paws that allow them to burrow into the ground, where they are protected from predators.

Explanation:

I don’t wanna go to school I’m so tired

Answers

Answer:

then don't school is for nerds and bullys the rest kinda are not really necessary well i hope you found this helpful

As a commodity producer, the price that you receive is likely to be different than the price your neighbor receives for selling the same commodity.


True

False

PLEASE HELP ME PLEASE

Answers

Answer:

True True True

Explanation:

hope it help

Explanation:

As a commodity producer, the price that you receive is likely to be different than the price your neighbor receives for selling the same commodity.

True✅✅

False

What would happen if cytokinesis failed?
The nucleus would never divide, and the new daughter cells would lack a
nucleus and would die.
The cell would be too big and contain more than one nuclei.
The cell would eventually split on its own.
Organisms would not produce more genetic material for each new
daughter cell.

Answers

Answer:

The nucleus would never divide, and the new daughter cells would lack a

nucleus and would die.

Explanation:

Cytokinesis is an essential process of cell division, part of the cell cycle. If cytokinesis failed, cells wouldn't be able to reproduce.

The following image gives a basic diagram of a typical moss plant. Label some of the important parts of the plant, and identify which structures represent the sporophyte and gametophyte phases.
An illustration shows a moss plant. The leaf-like parts and rhizoids are labeled as C and D respectively. Together they are labeled as B. The top portion of the plant is labeled as A.
Need answers for A,B,C,D I have included the multiple choice answers below.

Answers

Answer:

for the first one its the second one i could not see the others

Explanation:

All birds lay their eggs on land.
Which feature of birds allows the embryos in eggs to maintain homeostasis
and survive on land?
A. Hard, watertight shells
B. Specialized beaks
O C. Flexible, leathery shells
D. Insulating feathers

Answers

B just specialized beaks pls put the answer like Brainly answer

4. Don't
fishing when it's windy.
b) play
c) go
a) do
d) eat

Answers

Answer:

Go

Explanation:

Dont go fishing when its windy

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A rectangular swimming pool is 8 ft deep. One side of the pool is 3.5 times longer than the other. The amount of water needed to fill the swimming pool is 2800 cubic feet. Find the dimensions of the pool. The smaller dimension of the pool is enter your response here ft and the larger dimension is enter your response here ft. need help in a math question solve pls brainliest 5 super prefix wordsDefine and use in sentences. Which of the following is not a characteristic of the type b personality?. Please help its a test and it is past due!!! NO LINKS please!!!!Use the substitution method to solve the system of equation!!! Choose the correct ordered pair!?!? Use the picture below to help you!! Give an example of an adaptation Billy likes to go cycling.His bike has wheels of diameter 80 cm.He has a counter on his bike whichcounts the number of revolutionsthe wheels make.One day the counter shows 350 revolutions.How far has Billy cycled?Give your answer to the nearest metre. _______ immunity provides general defense against a variety of pathogens, whereas _______ immunity provides defense against specific pathogens. Subtract 8 feet from 9 yards, 1 foot.7 yards, 1 foot1 yard, 1 foot6 yards, 2 feet6 yards, 1 foot Question 11 Methods that return a decimal value must be declared using what type?a. intb. voidc. doubled. Stringe. nullQuestion 12Which of the following is true when x = 15?a. (x >= 15) && (x < 13)b. !(x > 13) || (x > 16)c. (x > 13) && (x < 17)d. (x < 15) || (x > 15)e. (x = 17) Please help I dont understand!! Does ANYONE Know How To Solve THIsBrainliest Will be awarded!!! 7. What does Madison say about factions' causes and effects? The 10th amendment of the U.S.Constitution states that any laws notwritten in the U.S. Constitution belongtoA. the peopleB. the countiesC. the statesNeed help and no links! 100 Points!How can I open a door without turning the knob.A. Say a prayer and lick the doorknobB. Seduce the doorknob with cream cheeseC. What door? just walk straight throughD. Order uber eats and have the worker open , but close the door instantly What happens to the people born on Feb.. 29????? do they stay one until 4 years past?? Learning Task 2: Describe the feelings or emotions expressed by each illustration below.....answer pls Which word signals that time has passed? committed however finally met What is the square root of 12a^3b^5 times the square root of 6ab^2? If 9 moles of P203 are formed, how manymoles of O2 reacted?