Answer:
see below :)
Explanation:
Infectious are more easily spread nowadays becuse of an increased population. The more the population increases, the bigger the advantage an infectious disease has. As of right now, because everyone is wearing masks, their immune systems are being weakened. Another reason for this is because of the increase in chemicals in our foods, which are now being transferred to our bodies. All of the medications people are taking also have an affect on the spread of disease; it gives diseases a chance to mutate.
Answer:
the second one
Explanation:
Its photosynthesis, the process of oxygen in plants
Raw material of photosynthesis is O2
The correct example about the relationship between the insect hormones ecdysteroid and PTTH is interaction of the endocrine and nervous system. Hence, Option A is correct.
ENDOCRINE SYSTEM:
It is a complex system which is under hormonal control. Hormones are released by the glands and it cordinates body functions from metabolism to growth and development.
NERVOUS SYSTEM:
It is a complex system consisting of organised group of cells called neurons that carry messages from brain and spinal cord to other various body parts.
As PTTH (prothoracicotropic hormone) stimulates prothoracic gland of an insect that triggers the release of ecdysone hormone for the stimulation there should be an neuroendocrine mechanism. Thus, Option A is correct.
Learn more about hormonal interations here:
brainly.com/question/1218436
#SPJ4
