Answer:
10/9x
Explanation:
Start with:
8x/3x+6 // 12x^2/5(x+2)
Factor out 3 then multiply the ricprocal of that fraction:
8x/3(x+2) * 5(x+2)/12x^2
Reduce the expression with x+2, then x,
8x/3 * 5/12x
Reduce numbers w/ GCD 4
2/3 * 5/3x
Lasty, multiply the fractions [multiply numerators&denominators seperatly]
2*5/3*3x
and you get...
10/9x [yayyyy!]
Answer: A mutagen is a chemical compound or form of radiation that causes mutations, which of course means a change in the dna of a cell. So, your answer would be C) an environmental agent that changes DNA.
Im assuming this is the question:
You have been studying a large lake ecosystem. You learn that toxins have been dumped into the water. You predict that the population with the highest concentration of the toxin would be the
ducks
zooplankton
algae
predatory birds
small fish
The answer to that question is predatory fish. In contaminated areas, bottom-dwelling fish are especially likely to have high levels of these chemicals because these substances settle to the bottom where the fish feed.
Here's an article to help in case:
https://www.doh.wa.gov/CommunityandEnvironment/Food/Fish/ContaminantsinFish
The mechanical vector that injects recombinant DNA directly into the nucleus of a host cell is a gene gun. A vector transports pathogens to the susceptible individual without any biologic development . On the other hand, the bacterial plasmid is a biological vector.