I’m assuming it must need food in order to survive?
21. B. recessive
22. D. DD and dd
23. D. FF and ff
Transfer of energy from one living to another in a food chain is called pyramid energy.
So simply we can energy pyramid shows how much energy passes from one living to another in a food chain.
Food chain always begins with autotrophs i.e. green nature (plants). Which becomes producers.
There are different types of organisms based on food habits and their environment.
The answer top the question given above is letter c. Surface currents.
There are two types of ocean currents, surface current and deep currents.
Surface currents which are caused by winds,move warm water
away from the equator and cool water away from the poles. Deep currents on the other hand are driven by differences in water density.