Answer:
TRUE
Explanation:
There are two types of infertility.
Primary infertility
Secondary infertility
In primary, couple have never conceived whereas secondary infertility refer to those couple who have been pregnant in the past at least once but now are unable to conceive
Answer:
Explanation:
In mammals the digestive tract is made up of multiple chambers such as the stomach, pancreas and intestines. These all work together to form the alimentary we use to digest food.
Answer: natural killer cell
Explanation:
Natural killer cells are referred to as the granular lymphocytes which play vital roles in the immunity against viruses. It doesn't need antigenic activation in order to detect and kill pathogens.
When an enemy cell is present, a natural killer cell secretes perforins, which bore a hole in the enemy cell membrane.
D.) <span>Unlike DNA, RNA is "a single stranded molecule"
Hope this helps!</span>
Answer:
digesting food
Explanation:
plants depend on mico organism on digesting food
