The cell wall and chlorophyll are absent in animal cells. These are unique to plant cells.
Answer:
d the amount of matter in a closed system is the same at the start of a reaction as at the end of the reaction
Genetic variation can be caused by mutation. Hope this helped. ;)
It depends on how much gravitational pull the object has. If it has the same amount the moon will continue to orbit.
The density dependent factors<span> are </span>factors<span> whose effects on the size or growth of the population vary with the population </span>density<span>. There are many types of </span>density dependent<span> limiting </span>factors<span> such as; availability of food, predation, disease, and migration. However the main</span>factor<span> is the availability of food</span>