A. off a surface at the same angle it strikes the surface
Answer:
Vertebrates represents animals with backbones.
I am not 100% sure but I feel
Nuclei is the answer
Answer:
2.3 and 4 only
Explanation:
Mutation is an alteration in the gene of an organism, which can cause some physiological and physical changes in the organism.
Mutation can have a favorable positive effect on an individual (e.g increasing microorganisms resistance to antibiotics) increasing its chances of adaptability and survivability, it can have a negative effect on the individual (e.g cancerous cells) which can reduce its survivability, and can have no effect at all on the individual (e.g having eyes with 2 different colors).