Answer:
It is c) a group of organisms that can mate with each other and have offspring. I hope this helps! :)
The average distance between the planet to the sun is about 149.6 million km
Answer:
Not enough water is one of the most common reasons that plants are unhealthy, wilt, and die. It’s not always easy, even for expert gardeners, to get watering right. To avoid or minimize the problems associated with under watering, know the signs of plants getting too little water.
:)
Answer:
can be caused by interaction with MHC/peptide in the absence of costimulation
Explanation:
T cells represent a class of white blood cells (lymphocytes) that have a major role in the adaptive immunity of the organism against specific pathogens. Peripheral tolerance is a type of immunological tolerance aimed at ensuring B and T cells that escaped from the central tolerance mechanism do not produce autoimmune diseases. Some populations of lymph node cells can induce peripheral tolerance in T helper cells (Th cells, CD4+ cells) by the presentation of peptide-MHCII (major histocompatibility complex type II) complexes acquired from dendritic cells. These dendritic cells are antigen-presenting cells that play a key role in adaptive immunity, which are well-known to induce CD4 and CD8 T cell tolerance in response to antigens (peptides/proteins).
I think it’s eutrophication
