The arrow in the picture below points to part of a dog's paw. Which feature is not a factor in the way this body part functions?
A. Its pointed shape
B. Its hardness
C. Its location
D. Its dark color

Cancer cells spread to other parts of the body by entering the bloodstream. which of the following organs could prevent a cancer cell in the bloodstream from spreading, and why? a. the spleen, because it releases lymphocytes into the blood b. the peyer's patches, because they release lymphocytes into the blood c. the lymph nodes, because they release lymph into the blood d. the thymus, because it releases lymph into the blood

In the united states there are many types of rabbits. four different species have four different ranges or habitats. in which range would developing white fur in winter most likely not be an advantage?

Which of the following best explains the changes in biodiversity shown in the graph?