Answer:
Well there are many ways for scientific models to be use like if something was small and you couldn't see it u would have to make a model of that
Explanation:
If this didn't help I'm sorry
Answer:
you'd have to change the angle
Explanation:
Answer:
The crust
Explanation:
The solid, outer layer is called the crust.
Answer:
substances can move from areas of low concentration to areas of high concentration
Explanation:
usually substances move across their concentration gradient which is from high concentration to low concentration. Active transport can allow substances to move against their concentration gradient.
Answer:
Originally, the distinction was based on morphological differences. However, it soon became that some types of organisms had different forms at various stages in their lives, here is why
Explanation:
changed genes is passed on to the next generation. Most mutations are bad, but some of them make the organism more successful in its life. Organisms that inherit that favorable new gene are likely to become more abundant than others of the species. (geologic times)