Answer:
Explanation:
Pollen tubes are produced by the male gametophytes of seed plants. Pollen tubes act as conduits to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms.
<span>The right answer is A. yes, the alleles for Beak X could remain in the population as a recessive gene.</span>
because the total time for restoration is lengthy, peat can be considered a fossil fuel. The correct option is B.
<h3>What exactly are fossil fuels?</h3>
Fossil fuels are fuels derived from the remains of dead plants and animals that decomposed over time under intense heat and pressure.
Because their replenishment time is longer than a human lifetime, fossil fuels are non-renewable energy sources.
Some examples of fossil fuels are petroleum, coal, etc.
The missing options of the question are:
- peat is a fossil fuel because rewetting it takes only 3-5 years.
- peat is a fossil fuel because the total time for restoration is lengthy.
- peat is not a fossil fuel because it has biologic origins, making it a biofuel.
- peat is not a fossil fuel because humans can promote the replenishment of peat.
The restoration process of peat takes a long time of more than 100 years. As a result, because the total time for restoration is lengthy, peat can be considered a fossil fuel.
Thus, the correct option is B.
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The cell membrane allows this to be true
Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. There is also a wide range of skin color across people. Skin color is also a polygenic trait, as are hair and eye color.
All the above:
Eye color
height
skin color
