If an alga had gold-colored chloroplasts and cell walls containing pectin and cellulose, was autotrophic but heterotrophic in the absence of adequate light, and stored food in the form of oil, which phylum would it belong to?

How can you keep track of variables in a science experiment?

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 of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.