Answer:
They have increased the amount of certain organisms (a lot of crops and such) and made the soil healthier. Also, other organisms that may feed on this are having more food.
Explanation:
Combining DNA from different sources is the definition of Recombinant DNA or rDNA. This is what is more commonly referred to as genetic engineering. The applications for this technology are vast, but very expensive. The use of Recombinant DNA has seen applications in agriculture where plants are given immunity to certain diseases or molds from another plant which is resistant or where human DNA is combined with forms of bacteria to produce a more natural insulin for people who are diabetic.
Unicellular would be known to be <span>Chlamydomonas
Volvox would be in a "colonial" organization.
Ulva would be </span><span>multicellular.
Just by understanding this, we would have to point out from your option which one would be relative to our understanding above, and therefore, your answer would then be the following.
Your correct answer would be the last option, as it would read:
</span><span>unicellular: Chlamydomonas ---- colonial: Volvox ---- multicellular: Ulva.
</span>
Your answer: Last option.
