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CO2 enters the stomata during the day when they are open for photosynthesis. In exchange, O2 exits the stomata. While the stomata are open, there is a risk of water loss resulting in wilting and maybe death. The stomata help to conserve water at night while they are closed. Also, their waxy covering “cuticle” helps minimize water loss. On a very hot day, the stomata May close to preserve water but it comes with a cost, because if they close, photosynthesis slows down.
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That would be the sun, because of its gravitational pull its what pulled the other planets closer, then making our solar system. However, the sun was formed after the solar nebula, but thats not an option, so the next thing made was the sun. I hope this helps you! :D
A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>
The ability to adapt to arid conditions can mean the difference between life or death for animals and plants that live in the desert. Some animals burrow deep underground in the heat of the day, lie in the shade until late afternoon or early evening, or have evolved salt glands, which allow their bodies to secrete salt but not sweat so they retain water. Most deserts have dry, arid climates with little to no rain, so every living organism that lives there must find a way to adapt, survive and thrive, or die.
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The principal components of the plasma membrane are lipids ( phospholipids and cholesterol), proteins, and carbohydrates.