Uv radiation results in a mutation of skin cells causing melanoma. true or false

Modern whales developed their traits through natural selection what occurs during the process of natural selection

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2