In mammals, The placenta is essential to the embryo for:

A. Nutrition, reproduction, and growth

B. Nutrition, respiration, and excretion

C. Locomotion, respiration, and excretion

D. Nutrition, reproduction, and excretion

Question 1 In a research study of medication, group A is given medication and group B is given a sugar pill. Which type of group is B? experimental group control group

Identify the animal below that is not in the same class as the others. Crayfish, Crabs, Scorpions, or Lobsters

Unusual warm water in the pacific ocean is called.

Insulin levels maintain glucose levels in blood. I blood glucose levels got very high, what would you expect to see happen to insulin levels. A. Insulin levels would decrease B. Insulin levels would increase C. Insulin levels would not change

Where does a plant get their carbon from

Which of the following is a way that human modification of limiting factors causes unbalance in ecosystems? a. habitat loss b. pollution c. climate changes d. all of the above

What form is carbon in the atmosphere?

Both sneezing and coughing are examples of protective reflexes triggered by irritation. sneezing and coughing both involve a disruption in respiration. what is the formal name for the period when respiration is suspended

The type of liquid is the

Why is the cell called the basic living unit of all living matter?