Scientists discovered that the albert's squirrels became two separate populations during the grand canyon's formation; they are now known as the albert's and kaibab squirrels.

their traits differ, and scientists agree that in the future they may no longer be able to breed with each other.

if this occurs and breeding can not happen, what will this be an example of?

a.
natural selection

b.
speciation

c.
succession

d.
spontaneous generation

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes