In 1986 several robotic spacecrafts were sent into space to study the halleys comet. which of these statements best explains why humans should continue to send robotic spacecrafts into space?

a) they absorb harmful radiations in space
b) they change weather conditions on earth
c) they discard some myths about objects in space
d) they destroy meteors and comets which might strike earth

Provide one reason why mitosis occurs.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species