Answer:
3.9 billion years
Explanation:
The half-life of potassium-40 is the time it takes for half of it to decay.
After one half-life, half of the original amount will remain.
After a second half-life, half of that amount will remain, and so on.
We can construct a table as follows:
We see that the mass will drop to 10 g after three half-lives.
1 half-life = 1.3 billion years
3 half-lives = 3.9 billion years
1. Large cities or Maine landscapes
2. The population of coyotes might increase if the preadetors of coyotes die out, for ex; Wolves eat coyotes for a competition or hunger. It will effect the ecosystem because it will eat more deer and the grass will grow more because the can't eat it. The population will increase because the coyote population are eating all the deer and are bearing children!
3. It can cause ripple effect through out the ecosystem or food chan, like for example: if a certain species of fish die out the preadetors that eat the fish will ie and the preadetor of that preadetor will also die out and it will continue on ward
HOPE I HELPED
Mendel* and to predict the results from genetic crosses
