Select all the true statements. In animal cells, lysosomes break down waste and worn-out cell parts. In an animal cell, the endoplasmic reticulum helps ribosomes build proteins. The nucleus of an animal cell contains the chromosomes but not the lysosomes.

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

c. movement because i took the test and it lets me review my answers

the correct answer is:

a population changes in response to a change in the environment.