2019 years have humans been on earth
Answer:
400
Explanation:
Because if you pull one black marble out of four and there are 100 black marbles then there is 300 others, so in total it would be 400 marbles.
thanks if i'm given brainliest!!!
By takeing a big nice juscy buns and banging it sooo hard
Yes. With the help of every individual organelle in the cell's body, a cell can keep itself alive. For example, they can use cellular respiration to create ATP.
