Respiratory and the circulatory.
The respiratory system allows gas exchange to occur at the lungs, swapping CO2 for O2.
This O2 is then picked up by the blood travelling through the circulatory system, allowing it to be delivered to the cells.
Endotherms can use metabolic heat to regulate body temperature; the temperature is high and stable, even with external fluctuations
Silk worms are an invasive species in the UK. They cover trees and kill them….. silk comes out of their butt and we call it silk thread. Silk thread is silk spun into thread, or silk worm pooo pooooooo
Answer:
Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region
Explanation:
Answer:
Volvox live in colonies. Volvox use cilia to move.
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