Answer:
The gases that contribute most to the Earth's greenhouse effect are: water vapour, carbon dioxide, nitrous oxide, methane and ozone. The contribution that a greenhouse gas makes to the greenhouse effect depends on the amount of it that it is the atmosphere and how much heat that particular gas absorbs and re-radiates.
Explanation:
The answer is D. Iodine is used to test for starches and, in the presence of a starch, it will turn a dark blue-black color.
Answer:
Bacteria
Explanation:
Bacterial are prokarotes, that inhabit virtually all habitats..Although some may be pathogenic, ,most bacteria are beneficial. They live in mutual relationship with their living hosts.where they help most in catabolic reactions especially in digestion of food and in nutrient cycle.
They lack membrane bound organelles,they have cell wall made up of peptidoglycan, their nucleus is not bounded with double membrane like Eukaryotes.They vary in shapes, most are spherical in shape, with the shape determined by the cell wall and the cytoskeleton in the cystosol.
Hi, I looked up your question and found these bins.
A=P(1/2)^(t/h)
A=final amount
P=initial amount
t=time
h=half life
so
h=1.3 billlion (just write 1.3 and remember to mulipy the end time by 1 billion)
and final amount is 25% of original or 0.25P
0.25P=P(1/2)^(t/1.3)
divide both sides by P
0.25=(1/2)^(t/1.3)
take ln of bot sides
ln(0.25)=ln((1/2)^(t/1.3))
property of logarithms
ln(0.25)=(t/1.3)ln(1/2)
divide both sides by ln(1/2)
(ln(0.25))/(ln(1/2))=t/1.3
times both sides by 1.3
(1.3ln(0.25))/(ln(1/2))=t
remember that this is billion so
(1,300,000,000ln(0.25))/(ln(1/2))=t
2600000000.0001=t
about 2.6 billion years
