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

What might be one limitation of using a greenhouse as a model to represent a large farm? A greenhouse is a controlled environment, and a large farm is not. A greenhouse is not exposed to the same weather patterns as a large farm.

Which of the following describes the structure of an amino acid?

A farmer crosses a pea plant heterozygous for green peapod color with a homozygous recessive yellow pea pod. What percentage of the offspring will most likely show the dominant trait? 100% 50% 25% 75%

Animals with billitteri symmetry

What is a halocline

Which life cycle describes a plant that reproduces asexually and sexually? A. egg + sperm → embryo → adult with all its chromosomes → gametes → adult; gametes produce an organism with half the chromosomes B.

What would happen to the mass of a cell in a hypertonic, isotonic and hypotonic?

How do air and water movement, and land masses affect the climate

Under what circumstances does membrane transport always require energy?

What is one disadvantage of using plasma gasification to detoxify hazardous waste?