Barnacles are a type of arthropod in the subphylum Crustacea, and are related to crabs and lobsters. Barnacles are exclusively m
arine, tend to live in shallow and tidal waters, or attached to larger organisms. Barnacles are sessile; that means they do not move about. The image shows barnacles attached to the tail of a humpback whale. In this relationship, the barnacles derive benefit. There is not benefit or harm to the whale. This relationship is an example of
A) commensalism.
B) competition.
C) mutualism.
D) predation.
A) commensalism.
B) competition.
C) mutualism.
D) predation.
2 answers:
Answer:
<u>Options-(A):</u> Commensalism.
Explanation:
As the barnacles are found on the skin of the whales, being attached to the mammal makes it easy for the barnacles to have more food and nutritional resources to live inside water. While, there is no benefit for the whales during such conditions as the barnacles nor provide nourishment to the specie nor it helps the whale to defend itself against any type of harm.Such relation between any two organisms is then termed as the commensalism by the professionals or we can say by the scientists who study such organisms.
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Answer:
at y=6.29 cm the charge of the two distribution will be equal.
Explanation:
Given:
linear charge density on the x-axis,
linear charge density of the other charge distribution,
Since both the linear charges are parallel and aligned by their centers hence we get the symmetric point along the y-axis where the electric fields will be equal.
Let the neural point be at x meters from the x-axis then the distance of that point from the y-axis will be (0.11-x) meters.
<u>we know, the electric field due to linear charge is given as:</u>
where:
linear charge density
r = radial distance from the center of wire
permittivity of free space
Therefore,
∴at y=6.29 cm the charge of the two distribution will be equal.