Which of these statements describe the sacrum? Check all of the boxes that apply. It is triangular in shape.

It is part of the thoracic cage.

It is made up of five fused vertebrae.

It is located above the lumbar vertebrae.

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled