Answer:
Biotic or biological limiting factors are things like food, availability of mates, disease, and predators.
Explanation:
The point on earth's surface directly above an earthquakes focus (hypocenter) is called the epicenter.
Answer:
Due to no resistance.
Explanation:
Most mosquitoes perish when DDT chemical was sprayed the first time because these mosquitoes are vulnerable to the DDT chemical and there is no resistance present in their body against this chemical. DDT chemical is an insecticide which is used against insects or pests that causes damage to human, organisms and crops. DDT was first synthesized in 1874 by the Austrian chemist named Othmar Zeidler.
Answer: MONOCOT
1) seeds with one cotyledon.
2) the plants have fibrous root system
3) leaves have parallel venation
4) the petals of flowers are trimerous(3 petals)
DICOT
1) seeds with two cotyledon.
2) the plants have taproot system.
3) leaves have reticulate venation
4) the petals of flowers are pentamerous (5 petals)
Explanation:
Lymphocytes generated during an initial infection that circulate in the body for years and quickly destroy that infection if it ever appears again are called the Memory t cells. These cells are a subset of infection that have previously encountered and responded to their respective antigen, thus they may be called the antigen experienced t cells.
