Answer:
2)
Explanation:
The positive control is the treatment where bacteria grew without lead. Since positive control indicates the presence of bacteria in the experimental conditions, it is possible to confirm that they only death in presence of this metal. However, it is important to note that it is imperative to repeat this experiment three times and also to include a negative control in order to confirm these results.
Answer:
1)double 2) nitrogen bases 3)sugar and phosphates 4)guanine
Explanation:
just trust me
Answer:
<em><u>Calcium carbonate </u></em>
Explanation:
<em>Coral reefs are made of thin layers of calcium </em><em>carbonate</em><em>. </em>
<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em>
<h2><u><em>HOPE</em><em> </em><em>IT</em><em> </em><em>HELPS</em><em> </em></u><em><u>YOU</u></em><em><u> </u></em></h2><h2><em><u>PLEASE</u></em><em><u> </u></em><em><u>MARK</u></em><em><u> </u></em><em><u>BRAINLIST</u></em><em><u> </u></em></h2>
<em>^</em><em>^</em>
<em>U</em>
The potential ecological niche of an organism is its fundamental niche, while the niche an organism actually occupies is its realized niche.
<h3>
What is called Ecological Niche?</h3>
Ecology uses the term "niche" to describe a species' role in a community. A species' niche is defined by the physical, environmental, and interactions with other species requirements (such as temperature or topography) (like predation or competition) Ecology defines a niche as the compatibility of a species with a certain environmental circumstance. It explains how an organism or population reacts to the distribution of resources and rivals (for instance, by expanding when resources are abundant and shrinking when predators, parasites, and pathogens are scarce), as well as how it changes those same factors.
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Both the temperate grasslands and temperate forests experience <u>seasonal climatic changes </u>
Explanation:
Both the temperate grasslands and temperate forests experience experience all the four seasons - spring, summer, winter and fall.
These climatic changes can be observed throughout the year with summer being warm and dry and winter being very cold. The summer temperature averages around 21 degrees centigrade while the winter temperature can go down below freezing levels.
This extremely cold winter leads to shedding of leaves of deciduous trees found in the temperate forests. The grasses in the temperate grasslands also shed and die annually with the roots and new buds protected by the soil during the cold weather.