If a couple had two girls, what is the chance that their next baby will be a girl?

25%

50%

100%

1/8

Dopamine is a neurotransmitter that causes the brain to feel happy. Certain drugs stop the synapses from removing neurotransmitters.

Nina wants to learn about the toxic effects of chemicals on humans. Which discipline should Nina study?

Why is it important that the electrons and protons are attracted to each other in an atom?

The mother is homozygous recessive and the father is homozygous dominant. Using the letter m for magical powers, what is the ratio for their offspring?

Which of the following is NOT a subsystem of Earth's hydrologic system?

When a protein is denatured, why does it lose its functionality?

This is a rotating machine that converts the kinetic energy of the wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a grinding stone, the machine is usually called a windmill.

In what way are slime molds similar to kelp?

What does not exist in a supersaturated solution

When dust and ash particles from a volcanic eruption block out sunlight and reduce solar radiation, earth experiences the. This results in temporary climate cooling