These factors are directly responsible for the survival of a organism. They include water, shelter, space, and food and can all run out if being used by too many individuals.

Natural selection is defined as A. the changes that occur in an organism over its lifespan. B. the process by which humans select the most desirable organisms in a population. C.

Which of the following allows plants to make sugar from carbon dioxide and water? a. chloroplast b. vesicle c. mitochondrion d. contractile vacuole

Amoeba paramecium and spirogyra are diverse. why then are they all classified as protists

What are the FIVE factors that form soil?

Imagine that the soil in an area is carried away by wind and water, leaving only rocks behind. How would this affect the living things in that area?

How many chromosomes does a human skin cell have?

Suppose you had a hypothesis you believed to be correct. What should you do to make it become a theory?

Which part of the scientific cycle does the graph directly represents

plants contain lignified conducting cells.

What do male and female gametophytes produce, respectively?