Which best describes what is required for any sound wave to travel?

empty space

any medium

solid

liquid

An unfertilized egg is

An example of an adaptation that might increase fitness is

Pow! a firecracker explodes close to you. your mouth drops open in surprise, a movement known as:

Mass and_ are the two things that affect the strength of the gravitational force A force B weight C distance D time

Sunlight is an example of what type of energy?

What is the energy of a photon first used to do in photosynthesis?

Select the correct statement regarding chemical synapses. A) Cells with gap junctions use chemical synapses. B) The release of neurotransmitter molecules gives cells the property of being electrically coupled.

How can speciation of plants benefit humans

Is cellulose a fat, carbohydrate or protien

I mineral must be formed by a manufactured process to be considered a mineral. T or F