<span>Males and females are attracted to each other in order to ensure the viability and fertility of the offspring, which is also why it is uncommon that males of one species be attracted to females of another. Members of two different species cannot mate and thus cannot produce fertile, viable offspring, unless they are part of different sub-species. But they must be part of the same species.
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Answer:
The options are
A) they may affect several populations in an ecosystem
B) they cannot be caused by human activity
C) they affect food chains but not food webs
D) They have no effect on living organisms in an ecosystem him
The answer is A) they may affect several populations in an ecosystem
Explanation:
Environmental changes include deforestation and climate changes. Organisms depend on their habitat and climatic conditions for their survival because it determines their food availability too.
When environmental change occurs they may affect several populations in an ecosystem.
I think the correct answer from the choices listed above is option A. Both proteins and complex carbohydrates are polymers of smaller subunits. They <span>are substances whose molecules have high molar masses and are composed of a large number of repeating units.</span>
Answer:
During the 3rd month the eyes, ears, nose, jaw and neck form along with the arms, legs, fingers, and toes.
Explanation:
Answer:
red blood cells or formed in the red bone marrow of bones
