Explanation:
The Precambrian covers almost 90% of the entire history of the Earth. It has been divided into three eras: the Hadean, the Archean and the Proterozoic. The Precambrian Era comprises all of geologic time prior to 600 million years ago.
Answer:
It tells when a fossilized organism was born. It tells where a fossilized organism was found.
Explanation:
Answer:
What do you mean dichotomous key? and how many do you have to put down?
Explanation:
Plants manufacture glucose during photosynthesis. Which would be the process that plans use to make food using sunlight.