To act as a catalyst in chem reactions
Answer:
1. They make up part of a negative feedback system that promotes insect population growth.
Explanation:
If the Martin becomes extinct, it will cause an increase in insect population, as there is no predator to maintain the population. A population growth of insects would be a problem as it will destroy crops and agriculture.
I know that the environment plays a role in the changing of hair or feathers in some animals so here:
Winter- color changes to more resemble winter surroundings. You'll see more white colors to blend in.
Summer- the colors more resemble the summer colors; you'll see more browns and rocky looking colors to hide/blend in.
Spring- you'll see very vibrant colors like that of a flower.
Those are some examples, but I hope this helps.
Unbalanced,
Na + Cl2
Na = 1
Cl = 2
NaCl
Na = 1
Cl = 1
Basically, both the reactants and products must have equal amounts of each element.
