The value because it could be worth a lot or a little
Directional selection favors one of the extreme phenotypes. Option B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.
<h3>What is directional selection?</h3>
Directional selection increases in the proportion of individuals with an extreme phenotypic trait.
There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example the environmental pressure is drought during several years.
Drought periods decreases the fitness of plants that produce thin seed coats because they dehydrate before germinating.
Originally the population expressed both types of seeds. But after the drought pressure, only plants that produce seeds with thicker coats got to survive and reproduce.
The correct option is B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.
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The attitude that is NOT important in science is <u>b. having a closed mind.</u>
<h3>What is a closed mind?</h3>
A closed mind refers to a person who is not willing to consider different ideas or opinions.
A closed mind cannot engage in scientific inquiries.
Scientific inquiry helps scientists to study the natural world in diverse ways before proposing explanations based on the evidence derived from their scientific activities.
Thus, important attitudes in science include:
- Curiosity
- Creativity
- Skepticism.
- Honesty
- Flexibility
- Persistence
- Open-mindedness
- Tolerance of uncertainty
- Acceptance of the provisional nature of scientific explanation.
But, having a closed mind cannot help in science.
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Answer:
Because melting can be reversed ( freezing )
Explanation:
Physical change is a change that can be reversed