Which statements help explain the scientist's conclusions? Select all of the answers that apply. A. All 8 species of modern bears have the same adaptations.
B. The same ancestral bear species can give rise to two or more species of modern bears.
C. Each of the 8 species of modern bears may have high fitness in only some environments.
D. All of the 8 species of modern bears have equally high fitness in any environment where bears live.
E. One of the species of modern bears was the ancestor of all the other bear species.

Consider the motion of the balloon and its air contents in terms of momentum. in step 1 above, the total momentum of the balloon and its contents was zero. recall that momentum = mv. both the balloon and the air inside it had a velocity of zero and therefore the total momentum was zero. now think about what happened when the air escaped from the balloon. a certain mass of air accelerated in one direction. in order to keep the total momentum of the system zero, the balloon itself (which has mass) had to accelerate in the opposite direction. use this scenario to you explain why the soda can rotates when the water squirts out of the escape holes. what was your hypothesis concerning the water-filled can? according to your data, do you think your hypothesis was correct? (be sure to refer to your data when answering this question.) summarize any difficulties or problems you had in performing the experiment that might have affected the results. describe how you might change the procedure to avoid these problems. give at least one more example of newton's third law in everyday life.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

Me with biology endocrine system crossword also image left i need with hw