The cell membrane. (It also could be cytoplasm because it supports the organelles. But I think it is the cell membrane because it says barrier, and the cell membrane is the cell's barrier between it and the outside of the cell.)
The cell membrane is the outer most layer of the animal cell. It is selectively permeable, so it lets good things in and keeps bad things out. It also helps larger things that the cell needs to get in such as glucose by the process of endocytosis.
Answer:
because they are bigger witch means more cells
Explanation:
they are bigger witch means more cells and the smaller animals have less cells and r always on the run from predators so they need to contently change to live
Answer:
<h2>A shadow is an area where direct light from a relatively small source is blocked by some opaque object. If the source is genuinely the only light around, the shadow will be absolutely black, and will have no colour.</h2>
✰ DNA stands for 
.
✰ It is a type of nucleic acid that contains the genetic code of organisms and is also the molecule of heredity in all cells.
✰ DNA is mainly present in the chromosomes in nucleus.
✰ It carries the genetic information that is passed on to the next generation.
