1. a mutation is a in the nucleotide sequence of a gene within the dna molecule.

2. chemicals that cause a mutation are known as

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

First dropdown options: a. runoff b. condensation c. evaporation second dropdown options: a. photosynthesis b. transpiration c. sweating third dropdown options: a. raindrops b. clouds c. animals