B because the peptides when they collect in a clump, has a effect like hydrocloric acid.
Answer:
operant conditioning
Explanation:
In operant conditioning, organisms learn to associate events that repeatedly happen together. The word "operant" should be changed to the word "classical." any relatively permanent change in behavior brought about by experience or practice.
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Answer:
<h2>1. DdBb</h2><h2>2. ddBb</h2><h2>3. DB, Db, dB and db.</h2><h2>4. dB and db.</h2><h2>5 50% or 1/2</h2><h2>6. 1/8 </h2>
Explanation:
As given, Allele for dimples(D) is dominant over alleles for no dimples (d), so D is dominant over d.
Allele for broad eyebrows (B) is dominant over allele for slender eyebrows (b), so B is dominant over b.
A man heterozygous for both traits ( DdBb) marries a women who has no dimple and heterozygous fro eyebrow (ddBb)
So cross is = DdBb × ddBb
1). Genotype of the man is DdBb.
2). Genotype of the woman is ddBb.
3). Genotype of the gametes produced by the man are DB, Db, dB and db.
4). Genotype of the gametes produced by the woman are dB and db.
5). Probability that their first child will have dimples 50% or 1/2
6). Probability that there first child will have both dimples as well as slender eyebrows 1/8
Explanation:
Fossil fuels are important energy sources for our every day activities.
Formation of fossil fuels
Fossil fuels forms from the accumulation and burial of organisms in a basin of deposition. Instead of the organisms decaying, they preserve their carbon content. To be worthy of becoming fossil fuels, organisms must be buried in an environment where there is little to no oxygen to fast-track decomposition of the buried organic matter. Increase in temperature and pressure causes the organic matter to transform into fossil fuels.
How are they obtained
First, different fossil fuels have their extraction techniques because they occur in different physical state of matter.
For the solids e.g coal: exploration is carried out first and if a prospect is delineated, mining engineers design the best way to extract the coal from nature. Coal is usually found laid in sedimentary beds in nature. Top layers of sediments can be removed to extract the coal.
For fluids such as crude oil and natural gas, after a prospect is identified, a rig is usually constructed to extract the fluid and gas. The natural pressure allows for the fluids the rise within the drill used in extraction.
How are they used
Coal and gas are used to power electrical generating plants. They are used to heat steams which drives turbines and produce electricity.
Natural gas is used as a domestic fuel for cooking and so also coal.
When crude is processed a lot of product is obtained. Gasoline is used to power most internal combustion engines. Some chemicals useful for manufacturing plastics, drugs e.t.c are also derived from the processed crude.
Learn more:
Harnessing fossil fuel brainly.com/question/9231468
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Answer/Explanation:
Pollution during the industrial revolution caused trees to become covered with soot, making them darker. This dark appearance meant that the peppered moth, which usually had a light colour, was clearly visible against the tree. This meant it was easier for predators to identify. As a result, their numbers decreased because they were an easier target.
However, there was also a rarer form of the moth, which was dark in colour. These were initially very rare. However, because of the change in the tree colour owing to the industrial revolution, these moths were better suited to the environment, as they were more camouflaged against the dark tree. This meant it was easier for them to avoid predators, and so they were more likely to survive to reproductive age and pass on the genes that produce the dark colour. This meant that the dark moths increased in number.
