Why is wind energy controversial? question 27 options: 1) wind energy needs fossil fuels. 2) wind energy is expensive. 3) wind energy is nonrenewable. 4) wind energy can harm migrating birds.

Which of the following would most likely be key to gathering evidence that the rna world hypothesis is valid? creation of suitable environments for long-term study of single-celled organisms simulation of early earth conditions and long-term study of the resulting molecules development of a system for studying the microsphere's ability to absorb additional molecules categorization of the different specific conditions that result in the development of microspheres

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?

Which locations on the map are low-pressure areas? a b c d e