Answer:
Aortic Valve
Explanation:
I just know it
b.secondary
Anything written about an issue/person after the fact is a SECONDARY source. A primary source would be the person them self sharing with you,or you witnessing the action or event.
the best announcement about the data collected on Amir’s desk could be Wave three resulted from positive interference, and Wave 4 resulted from adverse interference.
constructive interference takes place wherein the traces (representing peaks), move over each other. In different words, whilst waves are in segments, they intrude constructively. unfavorable interference occurs whilst waves are completely out of segment a top lies on the midpoint of two waves.
In reality, at all factors, the 2 waves exactly cancel each other out and there is no wave left! this is the unmarried maximum extraordinary component of waves. The sum of waves can be less than either wave, by myself, and might even be zero. that is referred to as damaging interference.
Learn more about constructive & destructive interference here: brainly.com/question/1346741
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Answer:
D
Explanation:
Wave 3 resulted from constructive interference, and Wave 4 resulted from destructive interference.
predator-prey
commensalism
mutualism
Answer:
Competition, A
Explanation: It's not D mutualism is when animals don't gain a lot or anything from each over. You can think of it as mutual the word.
Example of mutualism: The shark has fish on its back eating up all the dead skin on the shark. The shark gains being clean and the fish gain eating food.
Answer:
D
Explanation:
in the muscles.
Answer:
The functional unit of a muscle cell is known as a "sarcomere" which covers the distance between the two Z-lines.
The sarcomere consists of A-zone which contains both thick and thin filaments, H-zone which contains only thick filaments and I band which contains only thin filaments.
During muscle contraction, thick and thin myofibrils slide over each other due to which the distance between two z-line get reduced.The H and I zone gets shortened but A zone does not shorten but come close to other A- bands and disappears.