The precambrian era makes up about 90% of the earths history, but there was little to no living organisms at the time other than microscopic ones. The first eukaryotes were found in the cambrian period after the precambrian period, not only that but at the end of the precambrian era in the Proterozoic era there was a mass extinction of about 70-80% of all living organisms
True
There are many parts to the menstrual cycle but the longest part of it is getting the egg to get fertilized. After beginning to fertilize there will be a a “window” where the egg will be the most fertilized. This phase is called the ovulation phase. If the egg isn’t fertilized, the body gets ready to dispose of the egg and now the egg is disposed through what is known has the period
There are four forces of evolution: mutation, gene flow, genetic drift, and natural selection.
Answer:
Structural. The largest class of proteins are structural proteins. ...
Storage. Storage proteins house critical elements that your cells need. ...
Hormonal. Hormonal proteins act as chemical messengers. ...
Enzyme. Enzymes serve as biological catalysts needed for chemical reactions. ...
Immunoglobulins.
Explanation:
