Paleontologists and ecologists agree that select one:

a. extinction is tied exclusively to human activities

b. 99% of all species that have ever existed are now extinct

c. biodiversity is evenly spread over the earth's biomes

d. vmore than 99% of all species alive today have been discovered and described

e. more than 99% of all species alive today have been discovered and described

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

when it is at an intermediate population density