Why are stars and solar systems separated in the diagram below?

Why is excretion necessary to maintain homeostasis?

Which units ate used to measure both velocity and speed? check all that apply

Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air