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.
Answer:
Option A
Explanation:
The carrying capacity of any given ecosystem is the maximum production that is achieved without environmental degradation. Now, since the production in option B and C is less than 500,000 tons (i.e carrying capacity of Grand Banks of Newfoundland), thus the rate of population growth would not be greatest and hence both option B and C are incorrect
Option D is also incorrect as production cannot be greater than carrying capacity or else environment will start degrading
Hence, option A is correct
Explanation:
New cells are created from existing cells through a process referred to as the cell cycle
Answer:
D
Explanation:
Viruses lack many of the features that are the hallmarks of life . these potent pathogen are in fact considered to be non-living.
