Human immunodeficiency virus. (HIV)
Aids are a infectious agent.
It spends by any contact. ex: sex, hands, and any contact.
If someone has these diseases, they need to contact a doctor ASAP, and get treat. (some diseases can be controlled but not heal, meaning can NOT go away)!
Yes,
The cell, or plasma membrane, serves as a selectively permeable boundary between the internal cytoplasm and the external environment. All cells are composed of a plasma membrane.
The cell wall is situated to the outside of the cell membrane, and mainly functions to prevent osmotic rupture. Many taxa employ a cell wall, although some function without one
The answer to your question is <span> It's a physical system that is not affected by any other system. They don't really exist, other than the universe.
You might incorrectly state that an object is space is isolated from everything else, and it does seem that way. It's still affected by gravitational fields, but negligibly.
However, you look at the universe which you define to be everything ever. There is nothing else that exists to interact with it, so it is an isolated system.</span>
Answer: Hewo, there! your answer is Below
B. Warm all year long
Explanation:
here are normally only two seasons in tropical climates, a wet season and a dry season. The annual temperature range in tropical climates is normally very small. Sunlight is intense.
Hope this helps!
Have a great day!!
