Which is correct Lipids; move substances into and out of the cell Carbohydrates; help grow and repair tissue
Proteins; used as the primary source of energy
Cholesterol; molecules that build the genetic code

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

the supermassive black hole is in the middle of the galaxy.