Which happens during the second trimester?

A. Blood pumps through the heart.

B. The stomach produces digestive fluids.

C. The lips begin to develop.

D. Teeth begin to form.

Slow cooling magma or lava often results in the formation of

What is the use of natural gas

How can gene flow increase genetic variation within two neighboring populations

Robert and Susan are married and have 2 children, one son and one daughter. The children have different hair colors and eye colors.

Hydrothermal vents pump super heated salt water into the ocean that is filled with various minerals. Because of this, there is absolutely no life surrounding this oceanic feature. True Or False

What are the chemical properties of graphene? (This is not actually biology)

Which has more kinetic energy, a feather floating through the air or a rock on the ground?

The topmost zone near the shore of a lake or pond is the living are food for other creatures such as turtles, snakes, and ducks zone. The species A. Olimnetic B. Profundal C. littoral D. none of the above

In a food web, a bird eats plant-eating insects but also eats berries, where does the bird fit in the food web? a. both as a primary and secondary consumer b. as a primary consumer c. as a secondary consumer

In order to build the dipeptide, water was removed and smaller molecules were joined o make a larger molecule. What is the name of this chemical process?