1. The barnacles secrete a cement-like substance that anchors them to rocks in the a. Intertidal Zone
b. Mangrove Forests
C. Pond Area
d. Tropical forests

Which system revise and send electrical signals throughout the body

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

The first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation