Explanation:
There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.
Answer:
B.entire ecosystems are being destroyed
Explanation:
for the generation of new species, the present species should have to survive for the period of thousand years in order to produce and develop much better features to make them much better to survive and adapt themselves according to the time.
but in today word, the world living conditions are changing and threatening due to destruction of ecosystem by many activities performed by humans. These destruction will cause endangerment of the generation of the new species.
Answer:
It is C. energy and particles
Explanation:
I took the test
The arrows represent how much carbon moves from one reservoir to another each year, in gigatonnes per year. A) Look at the arrows pointing toward atmospheric CO2. What are the two major sources of atmospheric carbon? Ans: Natural & human activities.