Which cross section best represents the valley shape where a rapidly flowing stream is cutting into the bedrock in a mountainous area

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine