The answer is B. Multiple food chains make up a food web of an ecosystem. A food web is made up of multiple food chains, and shows the relationships between different organisms in an ecosystem.
Answer:
Option (a) is the correct answer of this question.
Explanation:
Mona shows' Jet Lag ' condition as she's having trouble sleeping as her internal body clock (circadian rhythm) is already locked to California's time zone instead of its present position and time zone. Therefore, her body can not adapt to the new time zone and experiences the phenomenon of' Jet lag.'
Jet lag can take place when sleep-wake routines are interrupted.A person can feel somnolent, exhausted, nauseous, dizzy and somewhat fatigued. This may be the product of going across time zones or performing shift work.
<span>keeping their stomata open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water. Leaves take in carbon dioxide and give off oxygen during photosynthesis.</span>
Answer:
Most polymers, including poly(ethene) and poly(propene) are not biodegradable . This means that microorganisms cannot break them down, so they: cause a litter problem if disposed of carelessly. last for many years in landfill sites.
Answer:
e. horizontal transfer of genes from a marine bacterium
Explanation:
Horizontal gene transfer is the transfer of genetic material from one independent mature bacterium to another and creates new gene combinations in the recipient bacterium. It mostly occurs between the bacterial of different species and is responsible for the spread of new genetic traits such as antibiotic resistance, digestion of specific substances, virulence, etc.
Transfer of genetic material from the donor to host bacteria can occur in three ways: transformation, transduction, and conjugation. According to the given information, marine Bacteroidetes have enzymes required to digest porphyran and agarose. <em>B. plebeius</em> might have acquired the genes for these enzymes from marine Bacteroidetes by horizontal gene transfer. This resulted in its ability to digest the marine seaweed while its close relative species cannot do so.