Help me please :
1) in a systemic circulatory system, blood flows from the heart to the lungs and returns to the heart. (true/false)
2) coagulation of the bloodis an effect from the action of receiving a compatible blood group. (true/false)

Witch type of microscope is used to view very small cell components like proteins and dna?

Monitor and apply fix up strategies

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.