Competition is directly related to

A. natural disasters.

B. reproduction.

C. disease.

D. human activities

What is the main influence of Earth's climate?

Most animals reproduce sexually by producing a. buds. b. spores. c. haploid gametes. d. diploid gametes.

How many chambers does the human heart have? a. one c. three b. two d. four

What is formed by all th ecosystems of earth?

Identify the bonds that connect the protein structures in a pleated sheet. a. sulfide linkages. b. glycosidic linkages. c. hydrogen bonds ester. d. linkages peptide bonds

Mendel's second law is the Law of Independent Assortment. According to that law and according to other facts that Mendel discovered, what statement or statements are true in the following list? a.

If a student wanted to separate the colored pigments from a green leaf, the student would likely consider the separation technique of: a. crystallization b. chromatography c. filtering d. distillation

Which of these is an enviromental effect of burning fossil fuels a. tempature increase b. soil erosion c. habbitat succesion d. Flooding

Which of the following is the best example of how factors within a person's environment can influence their personal health? A. eating too much sugar increasing a person's risk of diabetes B. regular exercise decreasing a person's cholesterol C.

What does a prokaryotic cell compare to (daily objects)