Which example best describes life in the Precambrian era a)only bacteria and algae are alive.
b)flowering plants are the dominant plant life, humans convert open spaces to farm land.
c) first flowering plants appear on land, dinosaurs roam the earth.
d)marine organisms are dominant, small organisms begin to move onto land.

Osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? view available hint(s)osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? the first law of thermodynamicsthe difference in the height of water columns on either side of a selectively permeable membranethe difference in water concentration across a selectively permeable membranethe difference in sugar or ion concentration across a selectively permeable membrane

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12