Answer: oxygen is present; electron transport chain is used
Explanation:
A. The Answer to this question is Mutation.
Answer: floods, forest fires, earthquakes
Explanation:
The short term changes are those changes that affects the organisms immediately. The effect of these changes remain for short duration. Thus the environment and the living beings adapt the changes. A flood can wipe out the terrestrial ecosystem, the ecosystem will regain its original form when the water level depletes. Forest fires may kill several trees and animals in an ecosystem. But some plants and animals will sustain which can give birth to new colonies. The earthquakes affect the earth crust and biosphere. The earth crust may get stabilize again by filling up the crater and biosphere will also promote of living beings.
Answer:
The material that forms the hard outer covering of many animals. Hard outer covering or case of certain organisms such as arthropods and turtles. ... The definition of a shell basically means any hard surface that covers the outer surface of an organism.
Explanation:
