How are humans changing the carbon cycle? Question 2 options: Humans are adding carbon to the Earth by over-farming. Humans are burning carbon and putting it into the atmosphere. Humans are planting more trees to add more oxygen to to the carbon cycle.

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.

Give an example of a trait that is controlled by more than one gene.

Put each tile to the correct location. categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. 1) scientific theories 2) both 3) scientific hypothesis a). a tentative statement used to guide scientific investigations b). makes predictions about future events c). can be tested many independent researches d). based on observations of natural phenomena e) . a well-established highly reliable explanation