The part of the earth system that includes earth’s solid, rocky, outer layer is the
a.
hydrosphere.
b.
atmosphere.
c.
biosphere.
d.
lithosphere.

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

What is the statement plant growth is affected by the color light