Answer: Turbidity blocks the sunlight that plants need to produce oxygen for fish and other aquatic life. ... One effect is an increase in rooted aquatic plants, since sunlight can now penetrate to greater depths.
Explanation:
It is formed by winds
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Answer:
Newton´s third Law Ex: when you push against a wall its pushes back with the exact same force.
Newton´s second Law Ex: If you roll a big ball and a small ball, the small ball will have more accelration.
Newton´s First Law Ex: If a baseball is hit it wouldn´t stop unless another force stops it or obstruct it.
Explanation:
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Answer:
Amplitude
Explanation:
Amplitude: Distance from the midpoint to a crest (or trough) of the wave. (The “height” of the wave.)
Answer:
The culture medium must be selective
Explanation:
Selective media are the media that have those ingredients which favor the growth of a particular bacterium and inhibit the growth of unwanted bacteria. So a selective media is used to selectively grow a particular micro-organism.
For example, MacConkey agar is a selective media that is used to isolate gram-negative enteric bacteria based on lactose fermenting ability. It contains ingredients like bile salt and crystal violet which inhibits the growth of gram-positive bacteria therefore it only allows the growth of gram-negative bacteria.
<em>Staphylococcus</em> <em>epidermidis</em> is a gram-positive bacteria and <em>E.coli</em> is gram-negative enteric bacteria so MacConkey agar can be used to select E.coli over <em>Staphylococcus</em> <em>epidermidis</em>. So the correct answer is the culture media must be selective.
