Lungs and skin can also be part of the excretory system due to fact that they both excrete wastes.
Skin secretes excess water and salts
Your lungs help you get rid of waste gases
The correct option is A. Resource partitioning refers to a situation in which living organisms live together in the same environment in such a way that it is easy for them to co-exist because they are not using the same resources. In the question given above, it will be easy for the two species of squirrels to co-exist because although both are feeding on acorns, they are not feeding on acorns from the same location; one feed on the ground, the other feed on the trees.
Living in herd is a structural adaptation.
There are three different kinds of adaptations: behavioural, physiological and structural.
Adaptations help animals survive and their ecosystem.
The second sentence does not sound correct but it seems correct to me (just not in grammar).
Hope it helped!
Answer:
La energía del organismo vivo no se puede perder ni ganar del entorno externo.
Explanation:
