The thyroid gland regulates the body's metabolism (through T3 and T4) and also affects the metabolism of calcium through the production of calcitonin, which reduces calcium concentration of the blood.
The parathyroid glands, which are located within the thyroid gland, also affect the metabolism of calcium by producing parathyroid hormone PTH, which increases calcium concentration of the blood.
Sexual reproduction:
Advantages: A species can evolve or adapt to changing environments, genetic diversity
Disadvantages: Time and energy needed to find a mate, requires both male and female gametes, one individual cannot reproduce
Asexual reproduction:
Advantages: Only one individual is needed to reproduce, doesn’t require time or energy to find a mate, can reproduce rapidly in good conditions
Disadvantages: No genetic variation, all of the offspring have the same weaknesses, can’t adapt or evolve
Love and Unity :) just kiddddding aging cells stop dividing because they become senescent. They do this by sending chemical signals to each other so that they know
Answer:
1 st question ) Lack of food and oxygen and the presence of wastes limit their growth.
