What is the source of energy in most ecosystems?

animals

plants

oxygen

sunlight

What was the result of collisons between the early earth and other smaller protoplanets

Why is it dangerous to leave non-fertilized eggs with fertilized eggs during incubation?

Example of a biological traits

A homozygous red flower is crossed with a homozygous white-flowered what are the expected phenotypes of The offspring

In a drug study, the medication would be the

Which of the following statements is true of an object composed of a single cell? It could be considered living only if it has some of the other characteristics of life. It is a living thing. It is not a living thing. It could become a living thing.

If night blindness is a recessive trait, what should the phenotype of the couple's fourth child be?

What's the jet stream and why is it important

a person who is more than 2o percent heavier than the average person of the same sex and height is said to be

How do nanoparticles of air pollution get into the brain?