DNA is always coiled up tightly in chromosomes.

True or false?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?