Nutrients from digested food enter the blood stream through the process of
1. absorption
2. elimination
3. respiration
4. secretion

Which term refers to the total dollar value of the goods and services produced in a country in a year?

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

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.