Which of the following attributes is characteristic of savannas but not of grasslands?
a.
burrowing animals
b.
droughts and fires
c.
shrubs and isolated trees
d.
a large number of grazing animals

c.  shrubs and isolated trees

Explanation:

Savanna refers to the tropical grassland and is characterized by presence of scattered trees and shrubs. It is located in areas of low rainfall or seasonal rainfall and experiences prolonged dry periods. The tree species present in Savanna exhibit fire adapted features and adaptations for protection against herbivores. As compared to the Savanna, the grasslands do not have trees.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.