Which of these is a function of the placenta?

A. To bring oxygen to the cells of the uterus

B. To bring nutrients to the embryo

O C. To provide the infant with a belly button

0 D. To open the cervix for childbirth

Which of the following is not a way Science influence society

The "backbone", or sides, of the dna molecule are made of a. cytosine. b. nitrogenous bases. c. hydrogen bonding. d. sugar and phosphate.

What two types of crust make up the lithosphere

During the race the concentration of sugar in the athletes blood decreases

A dog experiencing a high level of fear will usually exhibit A. ears lifted up and forward, direct eye contact, and hackles up. B. ears pinned back, direct eye contact, and hackles up. C.

Why do plants have a greater disadvantage in unpredictable environments than animals?

The nurse is planning care for an older client with respiratory acidosis. Which intervention should the nurse include in this client's plan of care? A) Administer prescribed intravenous fluids carefully. B) Administer intravenous sodium bicarbonate.

Which layer of the sun is hottest

Transport protein that provides a tube-like opening in the plasma

While collecting samples of rocks, a scientist collects several that contain fossils. What is most likely the type of rock in the scientists sample? a. Metamorphic Rock b. Igneous Rock c. Sedimentary Rock d. Mineral Rock