it is true that to test the smell of a substance, partially fill your lungs with air and, while standing slightly back from the fumes, use your hand to waft the odors gently toward your nose.
<h3>What is the odor?</h3>
An odor basically caused by one or more volatilized chemical compounds, which are generally found in low concentrations and can be detected by humans and animals using their sense of smell.
An odor is also known as a "smell" or a "scent," and it can be either pleasant or unpleasant.
To test the aroma of an actual content, temporarily fill the lungs with air and, standing gently downward from the fumes, gently billow the odors toward the nasal passages with the hand.
Thus, the given statement is true.
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<span>A
big variety of organisms’ genomes have genes that control the organisms’ development
at different stages. The remains of ancestral traits usually appear at
different stages of the embryological development. For example, hair growth and
loss, the development and deformation of the yolk sac or appearance and
disappearance of gill structures in the embryo development of vertebrates.</span>
Answer:
It results in variations in populations for the survival of species. If the variation are more drastic, then the DNA will not be able to function properly leading to the death of the cell.
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Answer:
d) It is beneficial to the whole species, but not to all of the individual members.
Explanation:
This form of behavior raises the fitness of all the species at the expenses of each member.
Each member of the species performs altruistic behavior towards the queen and her progenies as it assist in creating of her nest to increase their generation numbers. Take for example, The workers do more of nurturing of the queen offspring instead of laying their own eggs. This altruistic behavior of workers promotes the further population of their species at the expense of them producing their own offsprings.
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Here is the complete question:
Some species of wasps are social. The queen starts a colony from scratch each spring. She builds a small nest, and lays and raises a group of female workers. The workers enlarge the nest while the queen continues to lay eggs. Unfertilized eggs become males that mate with newly hatched females. All of the wasps except the newly fertilized females die by the summer.
Which best describes this behavior?
a)It is beneficial only to the males that do not fertilize eggs.
b)It is beneficial only to the female workers that are not fertilized.
c)It is beneficial to each one of the individual colony members.
d)It is beneficial to the whole species, but not to all of the individual members.
Answer:
38. Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.
39. The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas
40. Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.
41. Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
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