The answer is Phencyclidine or PCP. It was was developed in
the 1950s as a general anesthetic for surgery. It’s no longer used now due to
serious side effects. It could be any white powder, crystal, capsules, tablets,
or liquid. Taking great dosages of PCP can result to seizures, coma, and death.
But death more often came from accidental injury or suicide during PCP
intoxication.
There were more dark moths around factories because trees were darker near factories because of pollution. More light moths were found in the country away from the factories, in the forests with no factory pollution
The correct option is this: Males of one species perform orchestrated dances and sing songs that only attract females of the same species.
Ecological isolation refers to the sexual practice among living organisms, in which populations of living organisms occupy the same ecology or region but live in different habitats and refrain from inter species sexual relationships. There are five types of isolation, these are: ecological, temporal, mechanical, behavioral and geographical isolation.
Behavioral isolation is said to occur when two allopatric species living in the same territory refraining from inter breeding as a result of differences in courtship behaviors.
Answer:
8 and 18
Explanation:
This is more math relevant question. lemme try to solve it.
given coefficients: 2 and 5
the relation between 2 and 5 = x and y
x = x ; y = 2x + (x/2)
to see possible numerical combination, we apply one by one all possible combinations in this equation.
1) 4 and 10
x= 4
y = 2x + (x/2)
= 2 x (4) + (4/2)
= 8 + 2
y = 10
this numerical combination is possible.
2) 100 and 250
x = 100
y = (2 x 100) + (100/2)
= 200 + 50
y = 250
This numerical combination is also possible.
4) 40 and 100
x = 40
y = (2 x 40) + (40/2)
= 80 + 20
y = 100
Given possible combination 40 and 100 is right.
3) 8 and 18
x = 8
y = (2 x 8) + (8/2)
= 16 + 4
y = 20
so, here given possible combination, 8 and 18 is not right. The right combination will form 8 and 20.