Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin. Sponginskeletons<span> were and are used as scrubbers in bathtubs, though they are fairly expensive. The ubiquitous bathtub accessory called a lufa is NOT a </span>sponge<span>, but a plant.</span>
B. Cell membrane
Remember cell membrane is the structure aka “wall of the house” is the clear boundary between the cells internal and external environments:))
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Answer:
the engineering of rice crops to withstand flooding and contain more nutrients
Explanation:
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It determines how the molecules function.<span />
The sun is extraordinarily hot because it is a star. Additionally, each star has its own unique, incredibly hot processes. These reactions are referred to as thermonuclear fusion. The Sun appears to be enormous in comparison to other stars due of its proximity to us. The Sun is a star of medium size. For instance, the following is a list of some of the biggest stars in our galaxy and their distance from the Sun: Mu Cephi is approximately 1500 times the diameter of our sun. The sun's core is so heated and pressurized that nuclear fusion occurs, converting hydrogen to helium. Nuclear fusion generates energy in the form of heat and photons (light)... Solar heat and light are sufficient to illuminate Earth's days and keep our planet warm enough to support life.
