3. What causes blood pressure?

A. cholesterol in the blood

B. stress that exercise puts on heart muscle

C. contraction of the ventricles in the heart

D. removal of oxygen from the blood

A study on how the SARS virus spread throughout Asia due to airline travel and cultural values about preventing disease is a: Group of answer choices A. micro-level study B. meso-level study C. meta-level study D. global-level study

Which is the largest group of arthropods?

Which best is found only in dna adenine guanine cytosine thymine

What distinguishes an infectious disease from a lifestyle disease?

Which codon is the code for the amino acid histidine?

Which of the following is NOT caused by gravitational force? A. Gas and dust come together and form a planet. B. Stars cluster together to form a galaxy C. Planetes orbit a star D. Two atoms come together to form a molecule

What are two ways that a flood can negatively impact an ecosystem? A. increasing groundwater levels and depositing sediment B. spreading pollutants over a large area and depositing sediment C.

Which process describes nitrogen fixation? Question 19 options: animals eat plants containing nitrogen and return it to the soil through urination bacteria take nitrogen from the air and convert it to a form usable by plants organisms die and are

How can a microscopic paramecium and a large giraffe both be described by cell theory? How are they different?

Which of the following contain the genetic code?