I would say (A) because it allows the bacteria (bacteria X) to be exposed to the control condition and the experimental condition so that a cause-effect relationship can be established. Here, the control condition would be the darkened area and the experimental condition would be the lightened area.
Answers with Explanation:
A stream’s velocity is LOWER at the bottom and edges. A stream’s invisible DISSOLVED load represents (on average) about 15% of the mass of material transported. A stream with many rapids and waterfalls is likely a YOUNG (AT THE YOUTHFUL STAGE) stream. In a meander, water flowing around the outside of a curve flows FASTER than water flowing around the inside of the curve. An oxbow lake can form near a MEANDERED stream. A DELTA is likely to form where a stream deposits sediment as it enters another body of water.
Answer:
choanoflagellates and sponges are sister groups
Explanation:
The choanoflagellates are small unicellular organisms belonging to the Protista kingdom. These microorganisms are collared flagellates morphologically similar to the choanocyte cells of animal sponges, which have a central flagellum surrounded by a collar of microvilli. In consequence, it has been suggested that choanoflagellates may represent the closest living relatives of primitive metazoans (i.e., they are sister groups to sponges). This hypothesis has recently been supported by both molecular phylogenetic and comparative genomic analyses.
<span>When a system is behaving erratically, a graph of data measured from the system
</span><span>does not form a pattern.
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