Which of the following is a byproduct of aerobic activity?

A. carbon dioxide

B. lactic acid

C. phosphate

D. sodium nitrate

Children who have higher bmis, hypertension, and glucose intolerance have

The type of immunoglobulin produced through intranasal vaccination is A. IgA B. IgE C. IgD D. IgM

Salamanders brought into a new ecosystem that is colder than its all ecosystem the salamander cannot survive in the cold temperature in days which is the best way to describe a salamander in the new ecosystem

Tim S., a 40-year-old male, and his wife undergo fertility testing. The laboratory reports that the patient's semen contains a scanty amount of sperm. The physician documents this finding as

Building a mass transit system is likely to have which of the following effects? A.) increasing air pollution B.) traffic congestion C.) increasing the temperature of the urban heat island D.) none of the above

The cell theory states that A) all living things are made of cells. B) all cells have only one nucleus. Eliminate C) plants do not have cells. D) only animals have cells

2) The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice were the main predators of the forest beetles.

Which DNA bases pair with each other? How many hydrogen bonds are shared by each pair?

Which layers of sedimentary rock at Grand Staircase Escalante National Monument do you think are the oldest?

Animals in the higher trophic levels generally share two characteristics. They are typically