Answer:
Turn off the faucet if you aren’t using it atm,
Not pollute the water with gasoline
Explanation:
These will help preserve earth water supply because then you aren’t wasting the water or making it undrinkable.
Answer: It will affect muscle contraction because it is needed for the formation of muscle contraction cross-bridge.
Explanation: During muscle contraction calcium binds to troponin, a protein complex that regulates muscle contraction by exposing the binding site of actin filament. Actin filament active site is where myosin head binds to, creating a cross-bridge using enzyme ATPase to speed the reaction. Calcium ion are needed to activate troponin movement, otherwise it stays in its inactive form blocking the active site of actin filament. Without calcium ions, troponin will not move and there will be no muscle contractions.
Answer: 1) Eurasian water millfoil
2) Gold
3) A
Explanation:
Mountain chains match up where South America collided with Australia to form Pangaea.
