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What is the FUNCTION OF THE SETAE?
Answer:for filter feeding
Explanation:setae are used by filter feeders such as small crustaceans,baleen whales and marine prions.these organisms feed on suspended Feed in waters and so need a structure that allows them to extract the suspended particles from the water
Answer: Plate C
Explanation: In the picture, we can observe that the northern hemisphere experiences winter, whereas the southern hemisphere experiences summer. It is because the tilt of the earth is facing away from the sun in the northern hemisphere and the tilt is facing towards the sun in the southern hemisphere.
In the winter experiencing northern hemisphere, the plates L, K and J are having night time. But plate B, C and D are having daytime.
Here, plate D is region experiencing both the effects of summer and winter as it is in the equatorial zone. So it will not be fully considered to be experiencing winter.
Therefore, the plate C is the region that experiences daytime during winter.
Due to photosynthesis, plants convert Sunlight and Carbon Dioxide into Oxygen. All living things breathe in this gas (Oxygen).
Photosynthesis allows the air and oxygen into the earth and co2 out of the air and into the plants.
Not all minerals are considered gemstones because the designation of a gemstone depends on a combination of factors, including its beauty, rarity, durability, and demand in the market. Here are some reasons why not all minerals are classified as gemstones:
Beauty: Gemstones are valued for their aesthetic qualities, including color, clarity, brilliance, and luster. Not all minerals possess these desirable visual characteristics. Some minerals may be dull, opaque, or have unappealing colors that do not meet the standards of what is considered attractive for a gemstone.
Rarity: Gemstones are often associated with rarity, which increases their desirability and value. While many minerals exist abundantly in nature, only a few occur in gem-quality quantities. The scarcity of certain minerals contributes to their classification as gemstones, as they are prized for their relative scarcity compared to more common minerals.
Durability: Gemstones are expected to be durable and withstand the rigors of everyday wear and handling. Not all minerals possess the necessary hardness, toughness, or resistance to scratching and chipping required to be considered suitable for use in jewelry or other decorative purposes. For example, talc, the softest mineral, is not suitable as a gemstone due to its low hardness.
Market Demand: The perception of value and demand for a mineral as a gemstone is influenced by cultural, historical, and fashion trends. The desirability of certain gemstones can change over time, driven by factors such as fashion trends, marketing, and cultural preferences. While a mineral may have the necessary qualities to be classified as a gemstone, if it lacks demand in the market, it may not be widely recognized or used as a gemstone.
It's important to note that gemstones are a subset of minerals, and the distinction between gemstones and other minerals is often subjective and based on human preferences. Some minerals may be considered gemstones in certain contexts or cultures while not being widely recognized as such globally. If you are planning to buy gemstones online then you can visit the CabochonsForSale they have wide collection of gemstone.
I took this quiz too, the answer its B.) Sea Turtles.