Molecules needed in the cell can sometimes
be too large to pass
through the spaces of
the cell membrane,
How do these
biological molecules
move into the cell?
A. The molecule will break up into smaller pieces.
B. The molecule will shrink so that it can fit in the spaces.
C. The molecule will move
through a matching protein
channel.

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

Agenus is a taxonomic grouping that identifies a collection of species. when a scientist discovers a new species, how is this species assigned to a genus

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.