Lymphocytes can attack and kill cells that have which of the following malfunctions?
a. lack of nutrients
b. lack of hemoglobin
c. divide uncontrollably
d. produce antibodies

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.

Based on the number of offspring they produce at one time organisms are classified into two categories many offspring at once and a few at a time sort the carry sticks based on the category they describe