Stars begin to form from clouds of gas in space. The cold temperatures and high densities (compared to elsewhere in space, but would be considered a vacuum on Earth) of these clouds allow gravity to overcome thermal pressure and start the gravitational collapse that will form a star.
B: nucleus, mitochondria, cell membrane
c and d both have chloroplasts which are unique to plant cells
a is wrong because only plant cells have cell walls
Answer:
A: if it’s mobile (is able to move)
C: if it contains cilia (tiny hair-like projections that help it to move and eat)
D: if it is green in color
Explanation:
Just did it on edge 2020 ;D hope this helps
It is an organic catalyst. It speeds up certain chemical reactions in the body.