Which type of system would a tropical rainforest be?

biological

ecological

interpersonal

social

if we wanted to describe and better understand the structure of the rings of saturn, we might develop a

scale.

system.

machine.

model.

which of the following could not be an example of input?

nitrogen gas

cold

light

these could all be input.

What correctly describes the relationship between the earth and the sun

In 2001, records showed that local stocks of fish were down worldwide. yet, records of harvests indicated that fish were being taken at records rates. what was actually happening?

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.