Answer:
Well first u gotta find out what ph mean
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.
Your answer will be B.
Explanation:
Earthquakes are the result of released energy from tectonic plates rubbing against each other on active fault lines.
Answer:plant that absorbs water and other substances directly through its cell walls instead of through tubelike structures.hey are found close to the ground.
They use diffusion for nutrient transport.
Explanation:
Non-vascular plants are also referred to as bryophytes and are divided into three different types, including mosses, liverworts, and hornworts.
They have the following characteristics;
They lack a vascular tissue system for transporting water and nutrients.
They do not produce flowers, fruits, or seeds.
They also lack true leaves, roots, and stems. Instead, these plants have leaf-like, stem-like, and root-like structures that function similarly to leaves, stems, and roots.
Anaerobic breakdown of glucose produces lactic acid, which accumulates in the tissues and blood.