Lignin

a. is needed directly for photosynthesis.

b. is a red pigment.

c. provides structural support and waterproofing to plants.

d. is the female reproductive cell in seed plants

Approximateley how long ago did life arise on earth

Lactic acid fermentation in humans can lead to cramping due to lack of

If, Mia found this fossil and chiseled it from a sedimentary rock, what type of fossil most likely is it? A. Cast, B. Amber, C. Index fossil, D. Trace fossil.

A changing climate has strong implications for biodiversity Studies of fossit and polten distribution show that species are very sensitive to climate changes.

What is different about synthesis of lagging strand compared to synthesis of the leading strand? A) synthesis of leading strand does not occur in 5 * to 3 * direction.

Which trait did Gregor Mendel examine from the pea plant when he planned his study? a plant height b color of the plant flower c traits that were easy to distinguish d all of the above

In a laboratory population of flies, the female flies are gray and the males are yellowish gray. Biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to

There appears to be some relationship between population density and the presence of large dead zones.

Detail the relationship between diploid cells and homologous chromosomes

Each P1 parent of a monohybrid cross has completely identical genes ture false