Answer:
a. 0.5 grams b. 0.25
Explanation:
Just use the half-life formula(I linked it below)
a. 4(1/2)^90/30=1/2
b. 4(1/2)^120/30=1/4
I think it’s b
Hope it’s correct
For every 2 people, they would have 1 child. When all the parents die, the population would have 1/2. China had this policy for a while
Answer: Decrease the amount of animal waste that reaches the water supply.
A fecal coliform is an anaerobic, rod shaped and gram-negative bacteria. It originates in the intestines of warm blooded organisms. It is released in the fecal matter of humans and animals. This bacterial strain is a chief contaminant of water body. The waterborne diseases associated in humans because of this bacterial strain includes infection of ears, bacterial and viral gastroenteritis, typhoid fever and hepatitis A. The bacterial strain is added to water body by discharge of human sewage, pet animal feces runoff and agricultural wastes including animal fecal based manure runoff.
Therefore, by decreasing the amount of animal waste that reaches the water supply is an appropriate action that Florida farm could take to reduce fecal caliform in nearby water supplies.
Giraffes and Elephants: Giraffes have adapted a long neck over time letting them eat and access food allowing them to survive. If a dry season was unusually long they would succeed fine because they are able to eat and drink from the trees. Elephants have survived with similar tactics of eating higher up, they have rough skin allowing them to outlast the heat, and only need water after long periods of time.
