Answer:
two
Explanation:
The endocrine and central nervous systems are the major control systems for regulating homeostasis
oxygen flow is low and his lungs do not have a lot of capacity
Answer:
1. Use less cars travel way less with them if youan use a bike or walk to try stop too much CO2 being produced
2. Use less papaer or recyle trees are being cut down for them wich break down habittats and prevents filtrating CO2
3.RECYLE recylimg is something everyone can do it helps stop polution, rubish being frown in the seas oceans and animals eating them