Answer:
There can be many explanations to why a dandelion will show different heights, which is a phenotypical expression of genetic changes.
One of the most plausible, and which has been proven, comes from the theory of natural selection, explained by Charles Darwin. In essence, this theory states that any living organism will seek to adapt itself to the demands of the environment in order to survive and reproduce, meaning, pass its genes to the next generation. However, these genes must provide the necessary elements for that organism´s survival. If not, then the species dies and is replaced by those who did adapt to the environment.
When an organism, like this dandelion, is exposed to a certain environment, it needs to have the characteristics that will allow it to compete effectively for nutrients, water and sunlight. If the environment is a particularly harsh one, where these elements are not easy to get, then the flower will undergo specific genetic mutations to adapt to these needs, and these mutations will be expressed physically. Those that acquire the changes will survive in the new environment, and those that didn´t will die out.
The difference in height as an expression of genetic variation, therefore, is explained by this theory of natural selection and this ability by organisms to ensure their survival and reproduction, under certain circumstances.
Answer:
wind energy
Explanation
wind power is more efficient than solar power or energy because this system use less energy release less carbon dioxide to the atmosphere and produce more overall energy a single wind turbine can generate same amount of electricity in Kwh as thousands of solar power panels
Answer:
D: <em>The light-dependent reactions produce ATP and NADPH; the light-independent reactions use energy stored in ATP and NADPH.</em>
Explanation:
<em>Photosynthesis is a biological process during which green plants synthesize glucose using inorganic raw materials such as water and carbon dioxide. I</em>t is a reaction that takes place in an organelle known as chloroplast, and it consists of 2 reactions;
- the light dependent reaction during which light energy is used to split molecules of water and the resulting electron is used to synthesize ATP and NADPH
- the light independent reaction during which the ATP and NADPH produced in light dependent reaction is used to fix carbon dioxide into glucose.
While the light dependent reaction cannot proceed without light availability, the light independent reaction can proceed both in the presence or absence of light.
<em>Hence, the correct option is D.</em>
