Which characteristic makes nine amino acids "essential"?

All structural proteins are made from them.

They are not found in nature.

The body cannot make them.

All enzymes are made from them.

A rock with different fossils is shown below: Fossil Layers Fish Shell Fern Oak Based on the fossil, which organism evolved last?

Tell how to make a temporary magnet using electricity

Why do warmer and wetter biomes have higher net primary productivity

Which statement best describes comparative and descriptive investigations?

All of the following except this are examples of mass movement: creep, rock falls, landslides, ice wedging

A small fish eats plant material. Later that day, a heron dives into the water and eats the small fish. Which type of organism does the small fish represent in this scenario? parasite predator prey producer

True or false. The highlighted bone articulates with the ulna. True or false. The highlighted bone articulates with the ulna. FALSE TRUE

The savannah (a) is a hybrid domestic cat breed. it is the result of selectively breeding domestic cats with african servals (be) in order to produce the signature color markings and large size.

Which statement about solar eclipses is false? Select one: a. They occur during the full moon phase. b. They last only a few minutes. c. They may be partial or total eclipses. d. They are rare

Is there more lymphoid tissue in adults than in children?