Which of the following is considered to be a pioneer species during

secondary succession (there are 2 possible answers) ? *

grasses

mosses

bushes

O

trees

Where is the greatest volume of blood found in the body?

Which of the following is not an example of an organism responding to a stimulus

How do scientists know that the universe is expanding? The Doppler effect shows stars with yellow shifted light The Doppler effect shows stars with green shifted light The Doppler effect shows stars with red shifted light The Doppler effect shows

Which is a type of star system? A. dim stars B. galaxies C. wobbling stars D. globular clusters

Runners rely on muscles to propel them as they run. Muscles require a continuous supply of oxygen and glucose for contraction. Metabolism of these reactants generates carbon dioxide and lactate.

Methane hydrates in the ocean are a significant source of methane

Describe what makes up the universe.

The measure of the force with which air molecules push on a surface is called a

Plants get their energy from OA. the Sun OB. rocks OC. the wind OD. the soil

The cycle is not a nutrient cycle