<span>The answer is nerve net.
Jellyfish has a nerve net that surrounds its
whole body. It makes a series of interconnected neurons that form net-like structure. This net surrounds the whole body of the jellyfish. Some jellyfish may have sensory structures, motor nerve net, and diffuse nerve net. Sensory structures receive environment signals and send them through diffuse nerve net to motor nerve net that activates muscle contractions.</span>
A. Natural Selection. This is because the weeds that are not resistant to it die out before they can reproduce, but the resistant ones grow to maturity and then reproduce, passing down the resistance gene. Over time, the resistance gene would become a normal thing in weeds, while the non-resistant gene would not exist anyone, since the gene could not be passed on.
Answer:
New solids and gases are formed,including sugar and oxygen
In order for phytoplankton to use it, it must be nitrogen-fixedated by cyanobacteria where it's turned into nitrates- phytoplankton use the broken down nitrates.
<h3>Phytoplankton uses nitrate for what purposes?</h3>
The presence or absence of nutrients in the water, like phosphate and nitrate, affects the amount of phytoplankton in the water.Phosphorus and nitrate, which are markers of the quality and quantity of water fertility, are crucial for the growth & metabolism of phytoplankton, according to .
<h3>How is phytoplankton impacted by nitrate?</h3>
So because high levels of nitrate are consumed by low levels of phytoplankton, a concentration of nitrate drops correspondingly as the bloom develops.
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