The level of oxygen in the blood is the secondary stimulus
Answer:
eventhough it is near the sun it can let tge sun rays get out but venus cant thats why it is the second hottest
All living organisms are composed of one or more cells.
The cell is the most basic unit of life.
All cells arise from pre-existing, living cells.
Organs are made up of tissues
The solar energy of the sun is converted into chemical energy by the plants
