10. Friction is necessary when you are on a bike to stay .

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals