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professor190 [17]
3 years ago
9

Fifteen grams of a liquid plastic are frozen in a physical change that increases the volume. What can be known about the plastic

after the change
Biology
2 answers:
Vilka [71]3 years ago
5 0
Its the same weight.
liberstina [14]3 years ago
4 0

Answer:

It will still weigh the same, that is, 15 grams.

Explanation:

On the basis of the law of conservation of mass, mass can neither be destroyed nor be created, however, it can get changed from one form to another. Thus, during freezing of the liquid plastic, its molecules come close to each other, and as a consequence, it get modifies into solid-state.  

However, it will still be of similar weight as there will be no influence on its mass. Therefore, it can be said that plastic after getting transformed will still weigh fifteen grams.  

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What is a cell and atom​
Leto [7]

Answer:

The key difference between cell and atom is that a cell is made of molecules whereas atoms make up molecules. Cells are the smallest functioning unit in a living organism. ... Hence, an atom is the smallest unit of matter.

3 0
3 years ago
Mark knows that animals reflexively blink when air is puffed at their eyes. Now Mark wants to use this fact and classical condit
Rus_ich [418]

Answer:

the tone is the neutral stimulus

Explanation:

In classical conditioning, as first experimented by Pavlov in his experiment with dogs, the bell that was presented initially was the neutral stimulus which was not capable of eliciting salivation alone. He later paired the neutral stimulus (the bell), with the unconditioned stimulus (meat powder) which naturally elicited salivation. The neutral stimulus then became associated with the unconditioned stimulus to eventually trigger salivation when presented alone.

In the situation of the rat of which Mark wants to train it by applying classical conditioning technique, the tone is the neutral stimulus. Except it is paired with the unconditional stimulus which naturally would make the rat blink, it would only attract the attention of the rat without making it to blink.

6 0
3 years ago
Name and describe how at least 1 biotic factor can contribute to changes in gene frequency over
Feliz [49]

Answer:

Change in food source.

Explanation:

If there is a change in food source, then the organism will have to adapt to that change. For example, with Darwin's Theory on the finches on the Galapagos Islands. There were many different varieties from different size to different beaks. This was because of changes on food sources and they adapted to obtain them more.

7 0
3 years ago
Bones _____. Make blood cells are controlled by smooth muscles are part of the autonomic nervous system are connected to muscles
Alenkinab [10]

Answer:

make blood cells

Explanation:

<u>The red blood cells are made from the bone marrow of bones. </u>

<em>Smooth muscles form organs like the bladder and the stomach and allow them to change shape in order to perform their respective functions. Smooth muscles have nothing to do with bones.</em>

<em>The autonomic nervous system controls the functions of the body such as digestions, arousal, etc. It is a system of nerves, not bones.</em>

<em>Tendons connect muscles to bones, not synapses.</em>

Hence, the correct option is the bones make blood cells.

5 0
2 years ago
When a virus infects a bacterium what does the virus inject into the cell
adell [148]
The virus injects genetic material (DNA or RNA) into the host cell. Have a lucky day :)
8 0
3 years ago
Read 2 more answers
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