10 points Structure X was made in the

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Facilitated diffusion move large molecules and/or polar molecules across the cell membrane. what does facilitated diffusion use to do this?

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird