This statement is true: <span>The mineral ores for gold and silver are commonly found in the earth's crust.
These two types of metals are known as native metals because they are naturally occurring within the Earth's stratosphere. These metals are usually found through mining processes because they are often found mixed with sediments and other soil components. One method of acquiring gold is called gold panning while silver is obtained mixed with silver sulfide and sulfosalt minerals.</span>
Answers:
Yes , restrictions should be given on who can buy explosives. In short only authorised officers should always investigator users of explosives, they should investigate safety and security matter that has to do with explosives. They should make a strict regulations and penalty for defaulters. I think advice should be given users and buyers that has access to, explosives to protect public safety, property and the environment.
Decisions, studied I think
The question is incomplete as it does not have the options which are:
- Yes, because people's eyes move during sleep, and this stimulates the rods and cones.
- No, because rods and cones only convert light energy into electrical signals.
- No, because rods and cones never produce electrical signals.
- Yes, because the rods and cones are reproducing images that are then sent to the brain.
Answer:
No, because rods and cones only convert light energy into electrical signals.
Explanation:
The rod and cone cells are the photoreceptor cells present on the retina of the eye which receives the physical stimulus in the form of light and then converts the light energy into the electrical energy which is sent to the brain.
When we dream, our remains closed and no light is able to enter the eye as a result of which the rods and cones do not send the signals to the brain.
Thus, the selected options are correct.
Natural selection occurs in a population of organisms of the same species when the individuals are C. are genetically different and exhibit different characteristics.
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What is the Natural selection?</h3>
Natural selection most effective acts at the populace's heritable trends: choosing for useful alleles and, thus, growing their frequency withinside the populace, at the same time as choosing in opposition to deleterious alleles and, thereby, reducing their frequency. This procedure is referred to as adaptive evolution.
- Natural selection can most effective arise if there may be variant amongst contributors of the equal species.
- Natural selection is the procedure thru which populations of living organisms adapt and change. Individuals in a populace are certainly variable, that means that they're all exclusive in a few ways. This variant manner that a few people have trends higher perfect to the surroundings than others.
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