Answer:
B. Biosphere.
Explanation:
Which is the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms. Containing not only hundreds or thousands of ecosystems, but also humans.
Also planets are part of the astrology and space sciences not the biology field.
Hope this helps!
In an ecosystem, available energy A. Diminishes at each successive tropic level.
I believe the answer would be "The animals on the Galápagos Islands were recognizable as similar to their counterparts in other regions of the world, but had a range of noticeable differences from those counterparts. Many animals had small variations from island to island."
Answer:
directional selection
Explanation:
Directional selection is the most common type of natural selection and occurs when some individuals with characteristics favorable to the conditions of the environment in which they live, have survival advantages over individuals who do not have this advantage, who end up dying.
Imagine, for example, a graph showing the directional selection in the same species of moths. Moths of the same species have white and brown collations, in summer, brown moths can camouflage themselves on tree trunks, while white moths cannot and are easily captured by their predators, which means that the amount of white moths decrease. In this graph, the population of white moths would be at a minimum, at the same time that the population of brown moths would be at maximum.
However, with the arrival of the reverse, snow begins to cover the trees, allowing white moths to camouflage themselves more easily. The brown moths, then, are very exposed to predators, causing their population to reach the minimum while the population of white moths reaches the maximum.
The correct answer is option B. Diploid
The secondary nucleus is formed by the fusion of two polar nuclei which is a diploid.