The color of a star indicates it’s

volume

temperature.

speed.

distance

Select the correct answer. which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. c. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated. d. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea.

Awaste of product of respiration in animals that is used by plants to carry out photosynthesis is -a) carbon dioxide b) carbon monoxide c) calcium carbonate d) sodium bicarbonate

What must the membrane protein do so that hydrogen ions can flow through it ?