Leaves of cactus are modified into thorns

To reduce loss of water through transpiration leaves of cactus plants are modified into spines.

Explanation:

leaves are reduced to spines in a cactus , so that the water does not get evaporated with the heat of the SUN. 1. They are present in hot deserts which are scarce in water so in order to reduce the loss of water by Transpiration from the surface of the leaves, its leaves are reduced to spines

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15

gold i'm pretty sure i might be wrong