Answer:
B
Explanation:
I learned this 2 years ago
Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
Answer:
to an evolutionary biologist fitness simply means reproductive success and reflects how well an organism is adapted to its environment.We call them fit because of how successfull they reproduce not how well they do at athletic events
Explanation:
what did i just read can u explain please cuz im concerned
Answer: A plants cell as one large vacuole, while a animal cell has 1+ small vacuole
Explanation:
