Which is not an example of matter and energy cycling through living things? A. Cows eating grass
B. A rock resting on the ground
C. Grass giving off oxygen
D. Grass growing

B.) A rock resting on the ground.

Explanation:

This is because no energy is being expelled by the rock, and nor is the ground it's sitting on. The rest of the examples, something is being done and taking place.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

69 is the correct math for the amino acids