Answer:
1. T cells
2. B cells
Explanation:
With increased age, people become more prone to all infections and produce fewer responses for vaccines. This is due to the lowered levels of function of immune systems against the infections.
With increased age, thymus atrophy and/or hyposecretion of hormones from thymus gland result in reduced activity of T cells against infections. Less number of T cells respond to infections.
The reduced T cell production also makes the B cells less responsive. Reduced responses of B cells towards infection results in slower immune response as antibody levels do not rise quickly.
Answer: B, C, E
Explanation: I got it correct and here is proof.
Answer:
water is the universals solvent and the compound that wouldnt disolve is oli because water and oil don't mix
Explanation:
When Earth formed<span> 4.6 billion years ago from a hot mix of gases and solids, it had almost no </span>atmosphere<span>. The surface was molten. As </span>Earth<span> cooled, an </span>atmosphere formed<span> mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's </span>atmosphere<span>. So it would be Outgassing. Hope that helped :)</span>