Help??? Independent & Dependent Variables along with the constant.

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

Which feature would you expect to find in a population in which sexual selection depends on male competition?