So they can produce energy for themselves
Hope I helped!
~ Zoe
Answer:
The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
Answer:
Reshape the hills with terraces
Explanation:
It is the best way of preventing water eroding when it comes of doing agriculture on hills
Plants get the energy they need for photosynthesis from the sun
This reaction is double replacement because two ionic compounds are exchanged, making two new ionic compounds.