Which of the following best sums up current scientific thinking about the nature of dark energy?

dark energy probably exists, but we have little (if any) idea what it is.
dark energy is most likely made up of weakly interacting particles that do not interact with light.
dark energy is the source of the mind weapon used by sith lords in star wars.
dark energy most likely consists of a form of photons that we can't see or detect.

Characteristics of substance farming include all of the following except

70 pts answer the following questions in full sentences and paragraphs, using at least 150 words, in the essay box below. 1. which organisms are carnivores? herbivores? omnivores? 2. if the ecosystem is balanced, which populations should be the largest? the smallest? 3. imagine a group of hunters kills half of the rabbit population. how will the other organisms be affected? 4. imagine disease kills 85 percent of the wolf population. how will the other organisms be affected? 5. imagine a foreign mountain lion species is introduced into the ecosystem. how will the other organisms be affected?

In what way does renewable energy differ form nonrenewable energy?