Which statement is true about Earth′s layers?

A.

The crust is the least dense layer.

B.

The mantle is the least dense layer.

C.

The inner core is the least dense layer.

D.

The outer core is the least dense layer.

When using scientific methods to solve a problem, which of the following is a scientist most likely to do after forming a hypothesis? A) analyze date B) draw conclusions C) state a problem D) perform an experiment

How does the melting of ice caps near the North Pole affect the salinity of the ocean?

Incomplete dominance occurs when

What would happen if the gene for colored spots was not passed from a moth to its offspring

Each replicated chromosome pairs with its corresponding homologous chromosome. True or false

What does the biological species concept use as the primary criterion for determining species boundaries?

Which of the following is the best definition of a pollutant? A. a natural resource that humans overuse B. a human activity that destroys habitats c. a harmfal substance released into the environment D.

34. Which of the following is a heterotrophic organism? a. Pine tree b. Sunflower c. Mosquito d. Seaweed

How is ruminants stomach different from human stomach?

Cross-cultural research on human development indicates that