Which of the following statements is true of all organisms in every environment? a. they avoid interaction as much as possible. b. they are able to produce their own food. c. they must compete for essential resources. d. they must consume other organisms for energy.

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

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height