Answer:
a) (SO4)2 + Ba2 = BaSO4
b) (CO3)2 + 2H = H2O + CO2
c) NH4 + 2Na = Na + 2N + 2H
There u go :D
Answer:
The answer is meiosis
Explanation:
Mitosis results in daughter cells with the same genetic component as the parent. Hence, a drastic change in the environment may wipe out the entire population of organisms that only reproduce by mitosis.
No they do not. Scientists study it to figure it out why some have it and others do not. It is quite rare, actually. Certain humans are capable of things most would consider strange and not human, such as being able to calculate things at an incredible speed, or an athlete faster than an Olympic medalist.
That they were probably on land and that they evolved into sea animals or that that mountain used to be an ocean or water source and that it dried up and a mountain grew there. I'm not positive that this is correct though.
About 88 percent of geologic time is represented by the time span called the precambrian <span>era.</span>