What is a light year?
the time it takes for light to reach Earth from the Sun
the distance light travels in one vear
the time it takes for light to travel around the Sun
the distance light can travel in a year before it burns out

Why is excretion necessary to maintain homeostasis?

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.

Mitosis creates two identical daughter cells from one parent cell creates four nonidentical daughter cells from one parent cell is the most common type of reproduction for bacteria is the process by which male and female reproductive cells are created