In one cell (that will create eggs or sperm) chromosomes first need to

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

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down