Some species of animals including some salamanders and crickets spend their entire lives deep in caves where no sunlight reaches. Predict the main source of energy for these organisms

a. inform

explanation:

"how to" tells us that it will explain how to, which means to inform

it the character ahdfg gsytriw   errtywer erwqtydfgb gwty

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."

the simple predicate of the sentence is camped.