Vascular or non: cell walls with lignin

What will be an ideal response?


vascular

Environmental & Atmospheric Sciences

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Mass extinctions at the end of the Ordovician occurred because of

a. dramatic changes related to glaciation. b. dramatic chemical changes in seawater related to meteorite impact. c. increased solar radiation. d. decreased solar radiation. e. none of the above

Environmental & Atmospheric Sciences

What is usually responsible for a harmful algal bloom?

a. Diatoms b. Viruses c. Cyanobactiera d. Dinoflagellates

Environmental & Atmospheric Sciences

Human populations are growing in areas prone to seismic activity and near active volcanoes

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

What do these teardrop-shaped hills (drumlins) record?



A) Ancient lake levels
B) Piles of sediment recording past positions of the end of the glacier
C) Erosion and sculpting of soft materials by a moving glacier
D) Melting of large blocks of rock in the ice

Environmental & Atmospheric Sciences