Answer:
The major sources of evidence of evolution are: Anatomy, Molecular Biology, Biogeography, Fossils, and Direct observation.
Explanation:
Am certain that the factor that prevents us from finding fossils from the Precambian era is that Most rocks from that era are deeply buried. The precambrian is the informal name for the large expanse of time preceding the current Phanerozoic Eon. It began with the Earh's Formation about 4.5 billion years ago and lasted until the advent of multicellular life about 542 million years ago.
B. Group number
For example, Sodium(Na) is in Group 1 and Na^+ has a charge of +1.
The answer is number 3 because the species has to adjust rapidly to change their environment.
The miRNA functions as a guide by base-pairing with target mRNA to negatively regulate its expression.
Whereas, CRISPR technology is a simple yet powerful tool for editing genomes. It allows researchers to easily alter DNA sequences and modify gene function. Its many potential applications include correcting genetic defects, treating and preventing the spread of diseases and improving crops.