Which of the following are abiotic factors that shape ecosystems?
Group of answer choices

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.

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give

What are the wavelike contractions of smooth muscle that move food down the esophagus called