Charles Darwin developed the theory that explains how new species develop based on evidence from many different kinds of scientific inquiry. Darwin’s theory can only be valid if Earth is very old. The scientists who provided evidence for the earth’s old age were most likely astronomers such as Edwin Hubble.
geologists such as James Hutton.
biologists such as Francis Crick.
physicists such as Marie Curie.

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms