Answer:
Presence or absence of cilia/stinging cells.
Numbers.
Retractability.
Number of cells.
Explanation:
Apart from size difference, tentacles in Cnidaria and Bryozoa differs such that:
- <em>The tentacles in Cnidaria have no cilia surrounding them while those of Bryozoa are ciliated. Instead of cilia, the tentacles in Cnidaria have stinging cells.</em>
- <em>Tentacles in Cnidaria are fixed in number while the number may vary in Bryozoa.</em>
- <em>Tentacles in Cnidaria are often retractable while retractability is not possible in Bryozoa.</em>
- <em>Cnidaria tentacles are made up of multiple cells while those of Bryozoa are made up of single cells.</em>
Abiotic factors can cause harmful effects such as acid rain when too much is releadein to the atmosphere are Carbon, and Sulfur.
<h3>Acid rain</h3>
Acid deposition, often known as acid rain, is a general name for any type of precipitation that contains acidic elements, such as sulfuric or nitric acid, which falls to the ground from the atmosphere in wet or dry forms. This can apply to rain, snow, fog, hail, and even corrosive dust. Sulfur dioxide (SO2) and nitrogen oxides (NOX) that are released into the atmosphere and carried by air currents and wind result in acid rain. Water, oxygen, and other molecules react with the SO2 and NOX to generate sulfuric and nitric acids. While some of the SO2 and NOX that create acid rain come from natural sources like volcanoes, the majority of it is produced by burning fossil fuels.
Learn more about acid rain here:
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Answer: D
Explanation: The consumption of fish especially the small fish e.g shellfish is by far the most significant source of ingestion-related mercury exposure in humans and animals.
There are 4 factors for evolution: mutation, gene flow, genetic drift, and natural selection. Natural selection is the strongest
