Which type of water is the most dense? A. cold water with high salt content B. warm, salty water C. cold water with low salt content D. warm water with no salt

Answers

Answer 1

Answer: A. cold water with high salt content. The colder the water the more dense it is (ice is pretty dense). Adding salt to a liquid also makes it more dense.

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How do nitrogen-fixing bacteria help cycle nitrogen through ecosystems?A. They release nitrogen into the atmosphere when they replicate their DNA.B. They capture nitrogen from the atmosphere and convert it into forms that plants can use, like ammonia.C. They convert sunlight into chemical energy which is then stored in the nitrogen.D. They convert ammonia from animal feces and urine into forms that plants can use.
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Nitrogen is an important element in ____________ compound such as __________, DNA, ______________________ & chlorophyll. Nitrogen is the most _________________ gas in the atmosphere. It cycles from the _________________ to ______________ ____________ & back to __________________. But living things cannot use it in its gas form, therefore living things get ________________ from the __________. 1. Living organisms cannot use simple nitrogen molecules (NH2). 2. Living things take it in as a nitrate (NO3-). 3. Nitrate is formed when nitrogen is combined with oxygen. This process is called nitrogen ____________________.

Answers

Answer:

Nitrogen is an important element in the living things.

Compounds such as amino acids, DNA, proteins and DNA

Nitrogen is the most Abu can't gas in the atmosphere. It cycles from the atmosphere,to the terrestrial habitat and Marine habitat then back to the atmosphere.

Living things nitrogen from the nitrogenous compound.

Nitrate is formed when nitrogen combine with oxygen and it is called nitrogen fixation.

Explanation:

Nitrogen is an important element in living things and it is important for life processes. It is the major constituent of DNA, protein, amino acids and Chlorophyii.

Nitrogen is released from the atmosphere to the root nodules of leguminous plants or to the soil by bacteria called nitrogen fixing bacteria . Nitrogen can not be absorb in gaseous form by plants because they are unreactive but they are converted to nitrates and ammonium compound.

Virus? Living or not? If we use the image as an indicator, we might say living because A) proteins are present. B) it contains a nucleic acid. C) there is a complex structure. D) in a host, it is capable of reproduction.

Answers

Answer: The correct answer is -

D) in a host, it is capable of reproduction.

Explanation:

Virus can be described as a microscopic, infective, non living agent that typically possesses genetic material (DNA or RNA) that is surrounded by a proteinaceous coat (capsid).

It can not replicate by its own and thus it uses host machinery for replication. In other words, it multiplies within host organism. This is the reason that it can be called as living.

Thus, option D) is the right answer.

There is a long-lasting debate, to wether viruses are living things or not, because they do have many characteristics of living things, but not all of them.

If I were to say viruses where living organisms, it would definitely be because they are capable of reproducing in their hosts (D) because the other ones don't define if someting is living or not.

Hope it helped,

BioTeacher101

At the end of which era did the dinosaurs become extinct?A. Jurassic
B. Mesozoic
C. Paleozoic
D. Cenozoic

Answers

The answer is D. Cenozoic

Respiration occurs in

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Answer:

Animals and Plants(Including Humans)

Explanation:

Both organisms have the required organs for Respiration

Respiration happens in the cells of plants, animals and humans, mainly inside mitochondria, which are located in a cell's cytoplasm

Please help with answer

Answers

C. 50% would be the answer

Answer:

C. 50%

Explanation:

In a Punnett Square, 2 out of 4 squares show the long hair allele (Ll).

The tilt of the Earth axis shift between 22° and 25° in a process called the Milankovitch CycleA.true
B. false

Answers

Answer:

True

Explanation:

Because that was his theory

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A man pushes a lawn mower with a force of 200 N across 50 meters of his lawn. How much work did the man perform?