Photosynthesis occurs when a plants chlorophyll collect energy from the sun, producing a nutrient which helps the plant flourish. The leaves of a plant are flat and act as solar panels, collecting as much sunlight as it can.
The thymus becomes smaller with age as well as decreased immune system function.
The process of shrinking of the thymus is known as involution. This process occurs with any tissue that is not in frequent use. Before an individual reaches adulthood, the immune system has produced most of its T-cells. Therefore, new T-cells do not need to be produced, so the tissue of the thymus gland is replaced by adipose tissue.
Answer:
Because T-cell-independent antigens do not activate helper T cells, they fail to induce B cell memory, affinity maturation, or class switching, all of which require help from T cells. They therefore mainly stimulate the production of low-affinity (but high-avidity) IgM antibodies.
Explanation:
Answer:
1. Life on earth would die out as water is essential to all living things
Explanation:
I learned this information from my Biology class.
