If it takes 500 seconds for the light from the Sun to reach

Earth, what is the distance to the Sun in meters? (The speed

of light is 300,000,000 meters/second.)

In the human body which system functions in detecting and responding to stimuli? a. Endocrine b. Circulatory c. Muscular d. Nervous

What meiotic process, relative to the number of chromosomes of a given species, accounts for a significant amount of genetic variation in gametes?

What is the definition of asexual reproduction

You can develop adaptations if the environment changes. True or False

Is the liquid in the beaker classified as a solution

Rubbing the balloons against the woolen fabric or your hair creates static electricity. This involves negatively charged particles (electrons) jumping to positively charged objects.

Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? A) gamma aminobutyric acid B) acetylcholine C) cholinesterase D) norepinephrine

How does gas like oxygen get across the cell membrane?

Why are there so few aquatic plants and phytoplankton that live at the bottom zones in the ocean? a. the ocean floor contains many de composers b. most sunlight is absorbed before reaching these levels c. water is limiting factor d.

Which of the following is not a property of a base? Feels slippery to the touch Changes red litmus to blue Has a sour taste Produces OH - ions