What group of organisms way of getting food is vital to the survival of this and all ecosystems?

The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer.

What is a characteristic that increases an organisms ability to survive and reproduce in an environment?

The diagram shows a phase of mitosis. Which does the letter A represent in the diagram?

The outer membrane of the nucleus is continuous with the membrane of which other organelle?

What is the difference between a chromatin and chromatid?

During the last century, both global temperatures and men's average height have increased. Do these correlated trends mean that the increase in men's height caused the increase in global temperature? yes ___ no ___ Explain why or why not.

Describe the different types of fossil fuels. What makes them nonrenewable?

As the number of rabbits in a community goes up, the number of foxes in the same community goes up. What type of relationship is this?

Which of the following locations would most likely have the most fertile soil

What are dna composed of?