The amswer would be B beaucause the excretory system could ger rid of soild and waste
Explanation:
A whales "poop," actually helps the environment because smaller fish, microbes feed off of this. then it creates nutrients the ocean needs, it's a balance of nature. Regulating waste within the ocean...its a perfect balance of h2o quality & fish(oceanatic creature) life. like seaweed, plankton, and microbes necessary to naturally clean ocean debris...
air pressure is usually exerted counterclockwise
Answer:
B, C and D
Explanation:
Mitochondria and chloroplasts are not found in prokaryotes, since they prokaryotes do not contain any membrane-bound organelles. Chloroplasts are not found in animal cells either, so A is incorrect.
