* 2. Which concept is best illustrated in the flowchart below?
Survival
of the
fittest
Struggle for
existence
Overproduction
+
+
limited niches
Change of
species
or
new species
hereditary
variation
environmental
change
genetic engineering
natural selection
dynamic equilibrium
photosynthesis

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary