18: D, homologous
20: B, DNA
I can’t see 17 or 19!
The characteristics of T lymphocytes that are involved in specific immunity includes;
They mature in the thymus
They move freely among lymphoid tissues and connective tissues
They are responsible for cell mediated immunity.
Specific immunity is a subsystem of immune system that is comprised of highly specialized, systemic cells and processes that prevent the growth of pathogens or eliminate them from the body.
Answer: I can only help you with one
4. D because you need data fro what ever your doing.
thats as much as i can help vote me the brainleirst
Without a charge, it would be 35 electrons. Protons have a positive charge and electrons negative. They must balance each other out, otherwise the atom will be charged.
They have kingdom, class, and phylum, I’m kind of confused about the answer because of that.
