I think it might be A bit I’m not sure hope this helps
The right answer is D (less responsive to antigens)
It is proven that, after puberty, thymus activity (an organ that is included in the lymphatic system, producing T cells that pick up antigens) decreases and that in adult and aged people the thymus has no role. Work done in humans indicate that in fact the cellularity begins to decline from birth in favor of lymphocyte perivascular spaces and connective and adipose tissue, which leads to a decrease in the capture of antigens.
Answer:
Explanation:
Even if we stopped burning fossil fuels, the Earth would continue warming up for another few decades because of all the heat we've already produced. Global temperatures would climb – finally stabilizing at a level much higher than we've ever known.
Answer:
Mist netting is the process in which mist net, that resembles volleyball net is used to capture bats and wild birds for research projects.
<u>There are pros and cons of mist netting:</u>
<u>pros:</u>
- Help to monitor the demographic and population parameters.
- It provide information about the species which are missed using other count methods
<u>cons:</u>
- It can affect the population of birds.
- Survival rates of birds can reduce during capture ifpoor body condition and increased stress
Before cells could be seen by using a microscope, people believed that diseases were caused by spiritual effects.
