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uysha [10]
2 years ago
5

Which of the following examples shows that a chemical reaction has occurred?

Biology
2 answers:
loris [4]2 years ago
7 0

Answer:

C

Explanation:

When rust forms on something, a chemical change is occurring.

AVprozaik [17]2 years ago
4 0

Answer:

a

Explanation:

a

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HELP PLEASE DUE SOON
Aleks [24]

Answer:

Adding a lake near any town will most likely increase rainfall because of the added water, and water vapor levels will also increase. Because of the excess water in the environment, more water will be found in the surrounding atmosphere (the same reason precipitation will increase in the area.)

4 0
3 years ago
Lipids and carbohydrates differ in which of the following fundamental respects?
Schach [20]

Answer:

Carbohydrates are hydrophilic  whereas Lipids are hydrophobic.

Explanation:

Carbohydrates can be most commonly understood as hydrates of carbons. They generally contain more than two carbon atoms and are easily soluble in water, thus giving them the characteristics of hydrophilic compounds. Sugar and glucose are some of the important examples of carbohydrates.

On the other hand, lipids comprise a polar region, which attracts water and a much larger non-polar region, which repels water. This non-polar region dominates the polar region of lipid molecules thus making it a hydrophobic compound. Oils, fatty substances, steroids, and waxes are some of the important examples of Lipid molecules.

8 0
3 years ago
The key to the evolution of altruism is that a. recipients have to be more likely to carry the altruistic allele than nonrecipie
cupoosta [38]

Answer:

The correct answer is b. actors have to be more likely to carry the altruistic allele than non actors.

Explanation:

Altruism is the behavior by an organism that benefits other organisms by costing its own fitness. The actor is the individual who is doing altruism and the recipient is the individual who is getting benefited by the actor's altruism.

An example of altruistic behavior can be seen in animal kingdom easily. Vampire bats give blood to those members of the community who were not able to go for search for blood show altruistic behavior.

Actors have altruistic genes that suggest them to behave altruistically. Non-actors may not contain alleles of altruism but the recipient might have altruistic alleles.

Hamilton's rule says that natural selection will favor the altruistic allele when rb > c.

where r = coefficient of relatedness between donor and recipient

          b = benefit received by recipient and

          c = cost paid by altruist.

Therefore, the correct answer is b.

6 0
3 years ago
How can geologists predict events that will occur at convergent, divergent and transform boundaries?
KatRina [158]

Answer:

They are transformed by the armies of the United States and China wants to defeat them

6 0
3 years ago
Which of the following is not correct about diffraction?
kotykmax [81]

Answer:

Diffraction occurs just with electromagnetic waves.

Explanation:

8 0
3 years ago
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