An animal is a vertebrate. It is warm-blooded and has feathers on its body. Which class does it belong to?

A. Reptilia

B. Aves

C. Mammalia

When did the last mass extinction occur? O A. At the beginning of this era. O B. At the beginning of this period. O C. At the beginning of this epoch. O D. At the beginning of this eon.

Which factors add to the greenhouse effect and are caused by human activities? Select two options. A - a decrease in the amount of dust in the atmosphere B - a decrease in the amount of water on Earth's surface C - an increase in gases in the

A light bulb uses 2,000 J of energy in 1 min and 20 s. What is the power of the light bulb? 60 W 50 W 100 W 25 W

An adolescent with pneumonia is admitted to the pediatric unit. after his parents leave the unit for the evening, he tells the nurse he may have contracted human immunodeficiency virus (hiv).

Kinship ties and social groups are not important in states. A. True B. False

How much energy is lost when one organism consumes another organism? A. 10% B. 90% C. 80% D. 5%

Question 3 Volcanic islands and island chains, like the Hawaiian Islands, were created by (need an answer here) spots, which may or may not occur on a plate's boundary.

What way do Sugar Ants obtain and use energy? A. Autotrophic B. Heterotrophic C. Both D. Or Absorption

What chemical speeds up the process of decomposition when dead organisms are exposed to it?

Compare the location of electrons according to Bohr's theory and to the current atomic theory