Which of the following organisms would NOT be in the first trophic level of an energy pyramid? A. dog
B. tree
C. algae
D. grass

dog!

this is because the first energy comes from plants bc they can make their own food— therefore, energy :)

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na