When a snail is touched it retreats into its shell. this is an example of a. reproduction. b. response to a stimulus . c. metabolism. d. a unicellular organism.

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

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

Creating new things to solve problems and improve life depends on the close interaction of which two fields?