Answer:
cells connecting to each other in colonies and communicating.
Explanation:
<span>Scientists who wish to clone genes of interest into bacterial plasmids utilize
restriction enzymes, which cuts the target and vector DNA at specific sites. then
DNA ligase is used to form covalent bonds between the resulting fragments to complete the recombinant DNA molecule.
</span>
<span>Restriction enzymes (endonucleases) are enzymes which recognize specific target sequences (recognition sites) and will make a double-stranded cut in the DNA molecule at or near recognition sites.</span>
DNA ligase is an enzyme which uses ATP to link two DNA molecules if they have matching ends.
All vertebrates are, by nature, in two classes : the male class and the female class. Only some invertebrates like the earthworm, water snail etc are in single class with both male and female organs in the same body.
Answer:
C) human actions altering ecosystems with serious consequences
Explanation:
The increase in the manatee´s death during 2011-2012 might be directly related to human actions.
The increase in the number of people during the last 50 years to more than 500,000 individuals, and probably the lack of policies and regulation, lead to an enhance in water pollution by sewage tank leaks.
Pollution probably caused a gradual decrease in the manatee´s principal source of food, which also caused an increase in the toxic algae population.
Algae caused the death of manatees as a consequence of human action that altered the natural ecosystem by polluting water.
