Objects that can emit light easily are Transparent
Natural selection. Only spiders that were more resistant to the pesticide lived through the first spraying of the pesticide, thus we're the only ones that could reproduce. This in turn made the offspring of the previous generation more resistant as well; thus making the pesticide less effective.
Which cell parts are only found in plant cells? The answer is D.
The sun has little or nothing to do with any of these answers except A. The sun gives plants energy, plants give animals energy, and animals give us energy. (Unless you're vegetarian in which case you skip the animal part)
The Activation Energy is the energy required before the reaction activates.
So the answer is "The additional energy required for reactions to occur spontaneously"
