21. Which discovery would challenge the validity of this cladogram? A. A large aquatic vascular plant about 200 million years old
B. A species of algae that has existed for less than one million years
C. A moss species that has existed for less than 380 million years
D. A fossil of a fern more than 425 million years old

Asap what occurs after cytokinesis is completed at the end of meiosis 1?

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

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000