Answer:
There is no video but ecological relationship will be defined on a general note and it is not always beneficial to organisms.
Explanation:
In an ecosystem, organisms of the same or different species tend to interact with one another. This interaction is referred to as ECOLOGICAL RELATIONSHIP between the involved organisms. An ecological relationship can be of different types depending on the effect.
SYMBIOSIS is an ecological relationship between two organisms that interact together. SYMBIOSIS can either be mutualistic (both organisms benefit), parasitic (one organism loses and one gains), or commensalistic (one organism benefits and one neither benefits or loses). Another ecological relationship is PREDATION, where one organism called the PREDATOR feeds on part or all of another organism called PREY in order to obtain energy.
As stated above, some of the organisms involved in an ecological relationship benefits while others lose. Hence, it is not always a beneficial relationship to organisms.
Answer:
The correct answer will be- distal
Explanation:
In anatomy, the anatomist defined the standard position and movement of the bones of the skeletal system by universal anatomical terminologies.
The directional position of the bones of arms and legs is represented by the proximal and distal plane.
The proximal direction represents the bone closest to the point of origin or reference while distal represents the bone closest to the farthest away from the reference. Since the left wrist is farther from the reference or the elbow therefore, it is considered distal to the elbow.
Thus, distal is the correct answer.
Lack of vitamin D has been linked to increased risk for autoimmune diseases.
Hope that helped you.
It is called a sister chromatid, not a polar body.
