Which is an example of a competitive relationship?

a.
barnacles living on a whale's back feeding on particles in the water

b.
fungus growing around plant roots causing them to grow better

c.
saguaro cactus and sagebrush both needing water in the desert

d.
tapeworm feeding off the nutrients within a human's intestines

Which are observations about the tree on the right ,? check all that apply

The table below shows the number of foot bones in some horse fossils. horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.