The correct answer is the crust.
The crust is present above the mantle and is the hard outer shell of the Earth. The crust is 0 to 32 km in thickness. The densest type of crust is oceanic crust with the density of 3.0 g/cm3. The mantle is the layer below the crust and above the core.
The mantle exhibits an average density of 4.5 g/cm3. The density increases with depth as the pressure increases. The outer core exhibits a density between the range of 10 g/cm3 to 12.3 g per cm3 and the density of the inner core is about 12 g/cm3. Showing that the inner core exhibits the highest pressure.
<span>All natural disasters affect the ecosystem. They affect lands, forests, and coasts and cause death to people, plants and animal species, the spread of invasive species, and loss of habitat. In the short term, they cause climate change but over time, there are some types of natural disasters that increase biodiversity in the long run. Examples of these are earthquakes, landslides, volcanic eruptions, and wildfires. They play an important role in rejuvenating the ecosystem that they once destroyed.</span>
In this question, let us cite one specific example:
<span>1. </span><span>Volcanic eruption. The eruption has an immediate negative effect on surrounding, but through primary succession, the forest begins re-colonization almost immediately. Many plants, insects, and animal species arrive from adjacent places to take up residence. These life forms are adapted to survive in the severe conditions following volcanic eruption causing a new and more diverse forest ecosystem that will last a 150 year period.</span>
Answer:
Gene Flow
Explanation:
Gene flow is when genetic material gets transferred from one population to another.
The designation Rr for a pea-plant's peas shows that the plant is a <u>true-breeding plant</u>.
Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution