The answer is D because the volcano cause that to happen
Answer:
option D
Explanation:
more than half of global population growth between now and 2050 is expected to occur in Africa. Africa has the highest rate of population growth among major areas
I'm thinking the brain. The brain produces hormones and chemicals that tell the body to grow. And you also need to think a lot when trying to survive, which is when the brain comes in handy.
Answer:
years
Explanation:
Given-
Half life of 
C 
years
As we know -
Where
Mass of radioactive carbon after a time period "t"
initial mass of radioactive carbon
radioactive decay constant
time
First we will find the value of "k"
On solving, we get -
Now, when mass of 14C becomes 
% of the plant material on earth today, then its age would be
years
Answer:
There are changes during different times of the year.
Explanation:
During summer and spring the CO2 levels will be lower because plants are taking in more of it
