Explain how a nebula begins forming a star.

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry