If steel is more dense than lake water, why can a boat float?

Answers

Answer 1

Answer:

the average density of the boat, including the steel and air, is less dense than 1.00 g/cm³. the average density of the boat, including the steel and air, is more dense than 1.00 g/cm³. lake water is more dense than pure water.

Explanation:

You welcome


Related Questions

What is the process that uses energy to construct molecules?

Answers

Answer:

NADH via energy pathways including photosynthesis, glycolysis, the citric acid cycle, and oxidative phosphorylation

Explanation:

Does respiration expend more energy than photosynthesis?

Answers

Yes the answer is yes

Answer:

Explanation:

Photosynthesis vs Cellular Respiration Photosynthesis and cellular respiration are two basic metabolic processes occurring in the energy conversion of ecosystems. During photosynthesis, carbon dioxide and water are used in the synthesis of organic compounds with the aid of sunlight. This organic compounds can be used by cells as food. During cellular respiration, energy in the form of ATP is produced by breaking down food. The main difference between photosynthesis and cellular respiration is that photosynthesis is an anabolic process, where the synthesis of organic compounds occurs, storing energy whereas cellular respiration is a catabolic process, where the stored organic compounds are utilized, producing energy.

What are large molecules made up of smaller molecules called?Untitled
Question

Answers

A large molecule made up of smaller molecules is called a macromolecule. Macromolecules are also sometimes called polymers.

If the strand of DNA being used is A A A T A A G C G C C A, what is the messenger RNA strand that will be produced?

Answers

Answer: UUUAUUCGCGGU

Explanation: Remember the base pairing rules: cytosine with guanine and adenine with uracil. To compliment the given strand, you'd have to choose the base that would pair with each individual nucleotide. Since mRNA has no thymine, the adenine must pair with uracil instead. However, it does have adenine to pair with the thymine, even if it doesn't have any of its own.

Hope this helps,

Lacia

why does the structure of a protein depend on the sequence of the DNA?

Answers

Answer:

Explanation:

The Rules of Protein Structure. The function of a protein is determined by its shape. The shape of a protein is determined by its primary structure (sequence of amino acids). The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.

Which organelle or structure is described as a phospholipid bilayer?
A)cell membrane
B)cell wall
C)cytoskeleton
D)cytoplasm

Answers

A. Cell membrane
It is the correct answer

2. Identify two functions of plastids in plant cells.

Answers

Plastids. Plant plastids are a group of closely related membrane-bound organelles that carry out many functions. They are responsible for photosynthesis, for storage of products such as starch, and for the synthesis of many types of molecules that are needed as cellular building blocks.

Which group of organisms in an ecosystem does the niche of recycling organic matter back to the environment 

Answers

DECOMPOSERS that is the answer

Decomposers are organisms that break other organisms down and return nutrients back to the soil. Therefore, they also recycle organic matter back to the environment, making choice 2 the correct answer choice.

Helpppppppp is this correct? If no please correct me I’ll mark brainliestttt

Answers

Answer: 1st one is wrong, atoms are the smallest unit of measure

Explanation:

HELP ASAP PLEASE
What evidence do you have that water is a covalent compound?

Answers

Because when hydrogen atoms combine with the oxygen atom, they do so by sharing their outer shell electrons to gain a full outer shell.

Hope this helps. Have a good day!

Bonds in a molecule of Water are covalent bonds because the hydrogen and oxygen molecules share electrons, that’s why water is a covalent compound.

Which is a gamete?

A. Estrogen
B. Embryo
C. Cervix
D. Egg

Answers

Explanation:

egg is ideal female gamete

Coal is a metamorphic rock true or false

Answers

Answer:

true

Explanation

.......................................

Question 2 (3 points)
Since velocity describes both speed and direction, you can call it
a force arrow
a vector
a magnitude
the same as acceleration

Answers

Answer:

A vector, I guess

Explanation:

Well, a vector is a physical quantity that has both magnitude and direction. I hope this helps! :-)

When snow covering the ice sheet blow away, there is an increase in oxygen bubbles trapped under the ice. Explain why this occurs

Answers

Answer:

Impurities are trapped between layers of ice over the years.

Explanation:

As time goes on, many chemical impurities and gases are trapped between deposits of ice that form over the years in extremely cold regions such as Antarctica.

When the snow covering these layers of ice are removed, the gases trapped underneath are released and more oxygen dissolves in the ice and more bubbles are observed.

Asexual Reproduction occurs when there is only one parent that gives rise to an offspring which has the identical genetic makeup of the parent. It occurs in most single celled organisms such as bacteria and some multicellular organisms such as fungi and some plants. Some advantages of asexual reproduction are it is fast and efficient. It does not require a male and a female. Organisms can reproduce quickly! A disadvantage is that there is no genetic diversity and it can only be done by simple organisms.

Sexual Reproduction involves the combining of genetic information from two parents to produce a new organism that is a combination of both parents. It occurs in most complex organisms. Some advantages to sexual reproduction are that it creates genetic diversity. It allows for evolution of the species. A disadvantage is that it requires two organisms to reproduce, a male and a female. It also requires more energy than asexual reproduction.

Using the table below, list at least two advantages and disadvantages of Asexual and Sexual Reproduction.

asexual reproduction sexual reproduction:
advantages: advantages:

disadvantages: disadvantages:

Answers

Sexual reproduction:
Advantages: A species can evolve or adapt to changing environments, genetic diversity
Disadvantages: Time and energy needed to find a mate, requires both male and female gametes, one individual cannot reproduce

Asexual reproduction:
Advantages: Only one individual is needed to reproduce, doesn’t require time or energy to find a mate, can reproduce rapidly in good conditions
Disadvantages: No genetic variation, all of the offspring have the same weaknesses, can’t adapt or evolve

Determine the stimulus, receptor, control center response and effector for gas exchange for plants.
I put slides to help find the answer Please help me!!

Answers

Answer:

The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.

Stomata (the receptors of gas exchange process) are tiny holes found in the underside of leaves. They control water loss and gas exchange by opening and closing. They allow water vapour and oxygen out of the leaf and carbon dioxide into the leaf. In low light the guard cells lose water and become flaccid, causing the stomata to close

Explanation:

please answer the questions in the picture , thank you

Answers

Answer:

Explanation:

the first one is it is absorbing

the next one  is going into it

Which of the following statements is true?
A
Heterotrophs produce their own food.
00
Autotrophs take in nutrients from outside themselves.
с
Consumers are heterotrophs.
D
Consumers are autotrophs.



actually environmental science own words please need it now

Answers

The answer to this question is C

30 POINTS
Name an energy transformation that occurs in nature that transforms light energy into chemical energy?

Answers

Plants transform light energy into chemical energy during the process of photosynthesis

Tissues are composed of groups of:
A.
unicellular organisms.
B.
specialized cells.
C.
specialized organs.
D.
organisms.

Answers

Answer:

B

Explanation:

Tissues are made up of specialised cells

B tissues are made of specialized cells

please help! i need this due by 12 pm eastern time

Answers

Answer:

the first one i think is d

For the second one maybe D.

In order for the cells of the body to maintain homeostasis, the digestion of food to provide energy for cells must be followed by –
a. building polymers of amino acids from proteins
b. breakdown of fats and oils into glucose
c. the movement of glucose into the bloodstream, then into cells
d. Lipids stored as glycogen in the liver

Answers

Answer:b

Explanation:

In general, what types of substances tend to be acidic

Answers

Answer:

- Any pH on the pH scale that tends to be less than a 7 is an acidic substance. (Examples like:Lemon juice and vinegar)

The types of substance that is tends to be acidic are substance with PH lower than 7.

An acid can be regarded as molecule that can donate protons, this us referred as Brønsted–Lowry acid, or that can produce a covalent bond with an electron pair i.e Lewis acid. One of the properties of acid is that it turn blue litmus paper to red, and has a sour taste.To determine an acid, pH scale is helpful.pH scale can be regarded as one used to to determine the acidity or basicity of an aqueous solution. Acidic solutions are one with pH of (0-6), while alkaline has pH of (8-14) on this scale.

Examples of acids substance are;

inorganic substances such as sulfuric and nitric, hydrochloric, organic compounds such as carboxylic acid, sulfonic acid

Therefore, substance with lower pH are regarded to be acidic.

Learn more at : https://brainly.com/question/16239681referrer=searchResults

Describe a form of energy transformation that occurs in Earth's atmosphere.

Answers

Answer:

Radiation

Explanation:

Radiation is produced from the sun and moves down to earth through the atmosphere!

true or false :molecules of water and carbon dioxide down and used to build glucose during photosynthesis ​

Answers

Answer:

True

Explanation:

As has been stated, carbohydrates are the most-important direct organic product of photosynthesis in the majority of green plants using H20 and Co2. The formation of a simple carbohydrate, glucose.

The development of a new community in a previously uninhabited area occurs via which of the following processes?

a.secondary succession
b.primary succession
c.adaptive radiation
d.geographic isolation

Answers

Primary succession because establishment and development of an ecosystem in an area that was previously uninhabited.

Answer: B. Primary Succession

what happens when fluid is heated​

Answers


When heat is added to a substance, the molecules and atoms vibrate faster. Solids, liquids and gases all expand when heat is added. When heat leaves all substances, the molecules vibrate slower. The atoms can get closer which results in the matter contracting.

What do igneous rocks that undergo weathering and erosion become?

Answers

Answer:

When igneous rocks undergo weathering and erosion, they are broken into smaller pieces of sediment. Sediment is naturally occurring particles of rock

Explanation:

does vaccine use weak and dead pohthogen​

Answers

Answer:

yes

Explanation:

A: No, vaccines do not use weak and dead pathogen.

A2: Some vaccines do use those substances but are unapproved.

Most unapproved vaccines are illegal & not approved by CDC or the government. So no, they do not include those,

Cell theory states that
A) All cells have nuclei that contain genetic information
B) All cells regenerate and have the same structures.
C) living organisms are composed of cells that come from preexisting cells.
D) organisms that don't have certain organelles reproduce by binary fission

Answers

Answer:

C

Explanation:

Theodor Schwann was the originator of Cell Theroy

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