Which of the following is a way that carbon enters the atmosphere?
1. deposition of sediment
2. burial of biomass
3. volcanic activity
4. photosynthesis

Name the following: (a) category of pathogen that causes diseases, like common cold and mumps. (b) the microorganism that requires a host to produce.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?