A tissue.
Then a group of tissues that work together is an organ.
The a group of organs is an organ system.
A group of organ systems is and organism.
Answer:
Explanation: Three atmospheric processes modify the solar radiation passing through our atmosphere destined to the Earth's surface. These processes act on the radiation when it interacts with gases and suspended particles found in the atmosphere.
Parents give half of their genes to their offspring that is why their offspring has some features from their dad and some from their mom
66% of new HIV infections occur in sub-saharan Africa.
