B. larger and more complex
Explanation: As the environment became more unpredictable, bigger brains helped our ancestors survive.
Use this website, I remember having this question and I used this site
http://www.alaskakids.org/index.cfm/know-alaska/Alaska-Geography/Tundra
Answer:
The rise in follicle-stimulating hormone stimulates the growth of the follicle in the ovary. With this growth, the cells of the follicles produce increasing amounts of oestradiol and inhibin.
Hope this helps, good luck!
The density does NOT change. If you have an object and then ylu split it in half, the density does not change, it will be the same.
Answer:
A friend is someone who is there for you when you need them and cares for you. Friends should support you on almost everything, except if your doing something bad or anything like that.
Explanation:
