The visible part of the ear has the ability to stretch significantly, and then recoil back to its original position. Which protein fiber must be present?

Which is an example of clones that already are produced by nature?

True or false: it would be impossible to create a true-breeding population of lightly brown spotted pigs

What are long chains of carbon molecules called? 1: bonds 2: polymers 2: monomers 3: atoms Which of the following is not an organic compound? 1: aluminum 2: protein 3: methane 4: corn oil What are fossil fuels made from?

Some forms of polyethylene are relatively soft, much like paraffin wax. other forms of polyethylene are very hard and rigid.

How does the circulatory system work at the organ level? O Blood cells carry nutrients. O Cardiac muscle contracts. O The heart pumps the blood O Nutrients are delivered throughout the body.

The theory of endosymbiosis suggests that the ancestors of mitochondria were A) formed due an error in cytokinesis. B) once free-living heterotrophic prokaryotic cells. C) parasitic cells that lived within more complex organisms.

Wat biotic and abiotic factors control viral activity in the sea

Which structure is Chad drew a diagram to compare animal cells and bacterial cells. Which label belongs in the area marked X? found in some but not all plant cells?

Waves crash against the shores of an island, creating beaches and gullies. In this scenario, what is the primary landform and what is the secondary landform? A. primary landform: island, secondary landform: beach and gully B.

What is one substance that uses facilitated transport