What is the role of gills?

a. to pump blood

b. to bring oxygen into the animal

c. to break up food

d. to be a body cavity

The volume of a sphere increases with the cube of its radius. If the radius of a sphere increases from 2 cm to 6 cm. by what factor does its volume increase

Where does the exchange of oxygen, nutrients, and wastes occur?

This species existed between 2.7 and 2.3 mya and is characterized by having extreme prognathism?

A long-winged drosophila (fruit fly) female with a gray body mates with a black, short-winged male fly. the phenotypic ratio of the offspring is 1:1:1:1. what is the genotype of the female fly?

Summarize describe at least one way humans impact each of the following cycles : hydrologic, carbon, nitrogen, and phosphorus

Koch's postulates are criteria used to establish that Choose one: A. microorganisms can arise from nonliving matter. B. microbes can be classified based on genomic similarities. C. a particular microbe causes a particular disease. D.

What trait differentiates the archaea from the other two phylogenetic branches of life?

What do anaerobic organisms have in common with photosynthetic organisms?

Who makes the call to Odyssey as it reenters the atmosphere?

A national caterer determined that 87% of the people who sampled their food said that it was delicious. a random sample of 144 people is obtained from a population of 5000. the 144 people are asked to sample the caterer's food.