In HIV-infected patients, there is a gradual loss of CD4+ T cells over time. These cells, also called T helper cells, organize the immune system's attack on disease-causing invaders, like Salmonella.
Hi you’ve only provided one of the options but I don’t know if this will help. The cell membrane is a Thin flexible barristers that surround all cells. Selectively permeable is some substance to pass across while others cannot. Hopefully that can give you give an idea.
Global warming occurs when we burn fossil fuels such as coal and oil which release carbon dioxide... the carbon dioxide emissions trap heat in the atmosphere which causes a rise in temperatures which leads to global warming
Hello
Redi’s expoerment disaproved the spontaneous generation theory
Hope this helps Plz mark me as Brainliest
