Which condition is a biotic factor of an aquarium ecosystem?

amount of oxygen in the water

gravel on the bottom of the aquarium

algae growing on the glass

temperature of the water

Arabidopsis thaliana is a small angiosperm related to mustard that is commonly used in plant research experiments.

Which activities are part of managing water resources? Check all that apply. A) making water purer through processes such as desalination B) studying water to see whether it is polluted C) building reservoirs to store water until it is needed D)

Seismic waves are mechanical waves. True or false?

Which phase of cell division is photographed in order to make a karyotype? A. Anaphase of mitosis B. Anaphase I of meiosis C. Metaphase of mitosis D. Metaphase II of meiosis

How does adaptation affect the diversity of an ecosystem?

Many nonchordates have tails. What feature differentiates a chordate's tail from that of a nonchordate?

Difference between single-seeded fruit and mulit-seeded fruit

What are the two major parts of the cell?

At which part of a river would you have the best luck growing food

Why doesn't cellular respiration take place in just one step