Which of these is an environmental effect on deforestation?

a. temperature decrease

b. poisoning wildlife

c. soil erosion

d. water temperature increase

That would be C. Soil erosion. Deforestation means the destruction of trees, and trees have roots, roots which hold the ground in place, so when the wind blows, or water rushes thru it, it doesn't wash away. When trees get cut down, the roots die, and nothing is there to hold the soil down, so It washes away. Hope this helps!

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high