Answer:
90 seconds is equivalent to choose 1.5 minutes.
Explanation:
There are 60 seconds in 1 minute which means if there are 90 seconds then it will be equivalent to one and a half minute.
The correct answer is B. Summer
During summer it's the highest and during winter it's the lowest. This highest in the sky part is called the Summer Solstice.
The Amazon River was placed there for the purpose of draining water
from thousands of streams and rivers all across South America, and
of providing habitat for the thousands of species of insects, birds,
fish, lizards, and plants that live in or near it.
Recently, since the advent of homo humanus ... a unique species
that's always looking for a way to "use" nature ... the river has begun
to be used as a source of water for farming and drinking, as an easy
source of protein, and as a transportation route.
Answer:
waves
Explanation:
waves are little ripples in the water so..
Answer:
c. 2
Explanation:
Given that
Parent to daughter ratio = 1:3
Based on the above information, after considering the 1 half-life of radioactive isotope there is one-half of the real radioactive atoms of the parent left also the equivalent number of daughter atoms produced
Therefore after one half, the ratio between parent and daughter atom is 1:1
Now after the second half, half of the left parent atom would be transformed into the daughter cells
This remains a quarter of parent atom and 3 quarter of daughter atoms
So, the ratio of 1:3 would be shown after 2 half-lives