Which two atoms form a covalent bond?
A. A sodium and chlorine atom
B. Two oxygen atoms
C. Two sodium atoms
D. An iron and oxygen atom​

Answers

Answer 1

in a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.


Related Questions

At which point does warm air begin to rise before colliding with cold air?

Answers

At which point does warm air begin to rise before colliding with cold air. 3

Answer:

3

Explanation:

a population of white moths lives in a forest near a factory. this factory burns coal and pollutes the air with black dust. over time, this dust has settled on the trees in the area, making them darker in color. this could result in
1. an increase in the white moth population.
2. a decrease in the white moth population
3. an increase in the number of trees in the area
4. a decrease in the air pollution affecting the area

Answers

The answer to your question is option b

This is because if the trees are black, and covered with soot due to the pollution, caused by industrialisation, the white moths will be easily seen and constantly hunted by the predator, compared with the black moth population as they camouflage easily. Ultimately, the white moths would be hunted to such an extent that their population would dramatically decrease

Can fossil conservation take place on asphalt?

Answers

Answer:

nope

Explanation:

Can you guys plsssss help me with the questions plsss my assigment is already due plss help me guys!!!!!

Answers

Answer:

FOG stands for 'fats, oils and grease'. It is present infood products such as lard, butter, animal fats,  vegetable oils, and dairy products.

FOG is prepared during the process of cooking and the washing up processes. When FOG is allowed n sewer pipes it can accumulates inside sewer pipes, so proper disposal method of FOG is required.

Some of the source of FOG and disposal methods are as following:

Cooking oil -  Allow the oil to be cooled and place it in a non-recyclable container such as plastic-lined paper containers.

Food Scraps: compost bin can be used to dispose FOG by putting all food scrap into it.

Salad dressing - If little maount of salad dressing is left, use a paper towel to clean it and it will absorb the left residue which can be easily dipose in garbage.

Dairy products such as milk - it can be disposed on-farm or to a proper disposal site otherwise it will affect groundsurface as it contain fat.

Hence, using above methods for disposing FOG will help to save envrionment.

Explain why food webs are more stable than food chains

Answers

Answer:

Food webs are more stable than food chains because i one species died or became extinct there would be other options for the other organisms to all back on.

Example:

The mouse became extinct, the snake now eats bunnies because they are their other prey.

Why is nonpoint source pollution difficult to control?

Answers

Answer:

because it comes from the everyday activities of many different people, such as fertilizing a lawn, using a pesticide, or constructing a road or building.

Explanation:

Answer:

because it comes from the everyday activities of many different people, such as fertilizing a lawn, using a pesticide, or constructing a road or building.

Explanation:

edge

This pyramid represents
1 point
India Population (2001)
100+
95-99
Male
Female
75.79
20-20
650
5550
60 50 40 30 20 10 0 10 20 30 40 50 60
Population (in millions)
slow growth, developing country
rapid growth, developed country
rapid growth, developing country
d
slow growth, developed country

Answers

Answer:

rapid growth, developed country

what is a body plan (bio)

Answers

a body plan is a group of structural and developmental characteristics that can be used to identify a group of animals, such as a phylum.all of the members of a particular group share the same body plan at some point during their development—in the embryonic, larval, or adult stage.

mark as brainliest pls

Answer:

body plan. a set of morphological and developmental traits. Animal Overview. -mulitcellular eukaryotes. -heterotrophs that ingest their food.

Explanation:

A body plan, Bauplan, or ground plan is a set of morphological features common to many members of a phylum of animals. The vertebrate body plan is one of many: invertebrates consist of many phyla.

HOPE IT HELPS : D

Why is the use of iodised salt advisable?

Answers

Answer:

as iodine is necessary for our body......

Explanation:

Iodized salt is advisable due to the iodine it contains.Iodine is a mineral that is essential for the body,it helps prevent goiter. (the inflammation and swelling of the thyroid gland)

I hope this helps you.

Identify the strengths and weaknesses of Mendel’s Law of Independent Assortment.

Answers

Answer:

Explanation:

Mendel propel two laws The law of inheritance and that of independent assortment of gene.

Independent assortment of gene explain that alleles of a gene assort independently and that different Allele can show different phenotypic effect and differences. This means that in a gene where we have 2 allele they can both show individual difference where one can have a dominant effect over the other and the other allele is recessive.

This law does not take care of linked gene where alleles don't separate after crossing over sister chromatids but are rather inherited together given rise to complex inheritance.

Pleiotrophy effect of a gene where a gene is having many effects.

addison disease
1. what are the symptoms
2. who can it affect the most
3. what other issuses it can cause
4. what medication or changes in diet or lifstyle can help with symptoms relief
HELP ME PLEASE!

Answers

Answer: Addison disease is an adrenal insufficiency. This occurs because of the fact that adrenal gland produces very low quantity of hormones like cortisol, and aldosterone.

Explanation:

1. The symptoms of addison disease are loss of appetite, increased thirst, low mood, and muscle fatigue.

2. The addison disease is an autoimmune reaction, which can affect people of all age groups.

3. It can cause other diseases like tuberculosis.

4. The hormone replacement therapy is ideal for the treatment for addison disease. The use of oral corticosteroids is ideal. The diet containing balanced proteins, carbohydrates, fats, increased intake of vegetables including vitamins, and minerals are necessary for treatment of addison disease.

what words are missing? help pls


Two types of technological devices used to obtain data from remote regions of Earth’s biosphere are _______and ________ .

Answers

Answer:

Satellites

Localised instruments.

Explanation:

Satellites are technological device that is use to provide information from.some region of the Earth's biosphere like oceans , clods, lands e.t.c.It uses radar or optical sensor to capture images on the Earth. Satellite orbits round bigger objects.

Localised instruments are technological devices that is also use to provide information about the Earth's biosphere.

What do scientists believe provides evidence for the Big Bang theory?
A. The gradual spreading of the ocean floors along plate boundaries
B. the presence of the main asteroid belt
C. The core accretion theory of planet formation
D. The presence of cosmic microwave background radiation?

Answers

The presence of cosmic microwave background radiation is evidence for the Big Bang theory given by scientists. The correct option is D.

What is Big bang theory?

The Big Bang theory exemplifies how the universe came into existence from a high density and temperature starting point.

It is the dominant cosmological model that explains the evolution of the observable universe from its earliest known periods to its subsequent large-scale form.

According to scientists, the universe should be filled with radiation that is literally the remnant heat from the Big Bang, which is known as the "cosmic microwave background," or CMB.

Thus, the correct option is D.

For more details regarding Big Bang theory, visit:

https://brainly.com/question/1160650

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Which term is defined as a place where plates move apart (mostly in the sea but also on land

Answers




The Answer is


Rift Valley

Which is an ion found in a glass of water?
O
A. 02

B. N+
C. H+
D. 0-
SUBMIT

Answers

i am pretty sure its C. H+ im sorry if im wrong tho :(

When seedless plants die, the decaying plants are compressed into a substance called:

A. fuel
B. peat
C. energy

Answers

Answer:

C.peat

Explanation:

When seedles plants die, the waterlogged soil slows the decay process. Over time, these decaying plants are compressed into a substance called peat

Answer:

the answer is part A

Explanation:

5% of $20

somebody help me pls​

Answers

5% of $20 is $1; 5% off $20 is $19

What group behavior is being displayed by the cattle grouping together?

Answers

Answer:

It is called a social behavior.

Explanation:

Group behavior is a term that expresses the manner of behavior among two or more interacting specie of organism to achieve a purpose. Various organisms show different group behaviors.

When cattle group together, they display a herding ungulates as the behavioral group. They come together to achieve a particular objective which could be for protection, survival, feeding etc. Thus forming a social group and interact among themselves.

10. Which of the following groups of organisms are prokaryotic? (Choose all that apply)
Archaea
Or
Plants
Or bacteria
Or fungi

Answers

Answer:

Archaea bacteria

Explanation:

just search each answer choice asking if its eukaryotic or prokaryotic and it will tell you

Bacteria and Archaea are groups of organisms that are prokaryotic, which means that their cells do not have cellular organelles or a delimited nucleus in the cytoplasm.

The prokaryotic cell is characterized by not having a cell nucleus, therefore its ribosomes are smaller and its genetic material simpler.

Prokaryotes are, in most cases, unicellular microorganisms.

The bacteria is a unicellular and prokaryotic microorganism, which means that it does not have a nucleus, they are a few micrometers long and various shapes including spheres (cocci), rods (bacilli) and helices (spirils).

A diversity of unicellular microorganisms that make up the archaea kingdom lacking nuclei (prokaryotes) is known as archaea.

Their cells are surrounded by a covering (cell wall) made of various materials that give them high resistance against antibiotics or other harmful substances.

Therefore, we can conclude that bacteria and archaea are groups of organisms that are prokaryotic, which do not have a defined nucleus and or organelles surrounded by a membrane.

Learn more here: https://brainly.com/question/1056970

(c) find the longest interval during which no tree-cutting samples occurred. what is the first year that no tree-cutting samples occurred in that interval?

Answers

Answer:

Longest interval during which no tree-cutting sample occurred: 9 years (1203 AD - 1212 AD)

First year in that interval: 1203 AD

Explanation:

Lets complete the question first.

Q) A study uses tree rings to determine the year in which a tree was cut. The data is shown in the leaf and stem diagram in the ATTACHMENT.

The three digits number in the left column represents centuries and decades AD. The numbers on the right represents the years.

For example, consider the first input in the diagram

119 | 5   6

which means it represents 2 samples.

1195 AD, 1196 AD.

The longest interval with no tree-cutting samples is found from 1203 AD to 1212 AD.

Does compost cause tomato plants to grow faster and taller than artificial fertilizer?

Answers

Answer:

Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that's rich in nutrients. ... This fertiliser caused his plants to grow faster and taller than they grew in unfertilised soil, artificial fertiliser provides lacking minerals which also speeds up growth, it depends on the richness of minerals in the compost and the quality of artificial fertiliser


Your sense of touch depends upon:

direct contact
heat
chemical reactions
pain

Answers

Answer:

The answer is direct contact.

Explanation:

Sense of touch have to depends on direct contact.


Pluto dwells on the inner edge of the

A. Oort Cloud

B. Main asteroid belt

C. Kuiper belt

Answers

The answer will be C. Kuiper Belt

“A student sees several ants walking up a wall following the exact same trail that an ant took earlier. She wants to apply the scientific method the determine how the ants detected the trail. Which of these players would come first in her application of scientific method “
Please help

Answers

Answer:

Choice 4.

Explanation:

After asking the question, the next step in the scientific method is to make your hypothesis.

do honey bee produce propolis?​

Answers

Answer:

Propolis or bee glue is a resinous mixture that honey bees produce by mixing saliva and beeswax with exudate gathered from tree buds, sap flows, or other botanical sources. It is used as a sealant for unwanted open spaces in the hive.

Explanation:

Which energy source contributes least to global warming?

Answers

Answer:

ITS D

Geothermal energy is generally considered environmentally friendly and does not cause significant amounts of pollution. ... Harnessing geothermal energy does not involve any fuels, which means less cost fluctuations and stable electricity prices. Small footprint on land – can be built partially underground.

The environmental effects of geothermal development and power generation include the changes in land use associated with exploration and plant construction, noise and sight pollution, the discharge of water and gases, the production of foul odours, and soil subsidence.

SO YOU SEE THE ANSWER IS D

HOPE I HELPS PLEASE MARK ME BRAINLIEST.

Explanation:

Answer:

D: Geothermal.

Discuss the interconnections of the cardiovascular system with each of the other major body systems introduced. Give specific examples of these interactions and explain their effect on homeostatic balance.

Answers

The correct answer to this open question is the following.

The interconnections of the cardiovascular system with each of the other major body systems is of the utmost importance for the health of the human body. The circulatory system's main function is to take blood to all the cells of our body. The instant the heart stops bombing blood to all the cells, organs, glands, and systems, the body stops its vital functions. The Circulatory system has a direct relation to the optimal operation of other systems such as the Respiratory system, the Reproductive system, the Digestive system, the Skeletal system, the Muscular system, the Lymphatic system, the Nervous system, and the Endocrine system.

How does crossing over create new gene combinations on each chromosome

Answers

Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.

Answer:

Crossing-over

why tropical rain forests contain a large variety of plants and animals.

Answers

Sorry If I misspell or have horrible grammar

Explanation :

Rainforests have a lot of plants and animals because ;

Climate : The rainforest(s) are in very tropical regions , meaning the recieve a lot of sunlight . The energy is stored in plant vegetation . Animals are attracted to the food and eat it .

Edit : Also I tried to put the answer I found into my own words , I noticed the 1st person copied and pasted an answer which is copying

Answer:Sample Response:

Tropical rain forests are warm and wet, and the temperature does not vary much. Because of this, a huge variety of plants can live in tropical rain forests. Because there are so many kinds of plants, there are habitats for many different kinds of animals as well.

Explanation:

plz give brainliest

On nights when we see the new Moon phase, what side of the moon are we seeing?

Answers

Answer:

The side of the moon that isn't lit

Explanation:

Because that side of the moon isn't lit then that's what we're seeing

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He has computed the cost and revenue estimates for each product as follows: Product A Product B Initial investment: Cost of equipment (zero salvage value) $290,000 $490,000 Annual revenues and costs: Sales revenues $340,000 $440,000 Variable expenses $154,000 $206,000 Depreciation expense $58,000 $98,000 Fixed out-of-pocket operating costs $79,000 $59,000The company's discount rate is 16%.Required:1. Calculate the payback period for each product. 2. Calculate the net present value for each product.3. Calculate the internal rate of return for each product.4. Calculate the project profitability index for each product.5. Calculate the simple rate of return for each product. 6A. For each measure, identify whether Product A or Product B is preferred. 6B. Based on the simple rate of return, Lou Barlow would likely: 1. Accept Product A 2. Accept Product B 3. Reject both products Which is a change that occurs in both males and females during puberty? 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