Explanation:
Combine like terms.
-2y + 7y = 5y
-4 - 5 = -9
So the answer would be <u>5y - 9</u>
In Spirogyra and allied forms the chloroplast<span> grows as the cell grows, and only divides when this divides.</span><span>
</span>
Answer:
Explanation:
Never still, the earth and its environment are constantly changing. ... Surviving in a changing world is difficult if an organism cannot change along with it. ... Slowly, the population of fish will become more fully adapted to its new environment. ... Sometimes the changes cannot take place fast enough and a whole population
The oldest known minerals are 4.4 billion years old.
