Answer: Deep ocean currents are density-driven and differ from surface currents in scale, speed, and energy. Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is.
Explanation:
The four parts of evolution are variation, inheritance, selection, and time.
The three ingredients of natural selection are variation, consequences, and heritability.
Explanation:
Parts of evolution:
- Variation denotes the uniqueness in genetic makeup which leads to physical differences among different species and within species. Like in a species of butterflies, variations in body size, color, feathers can be observed.
- Inheritance refers to the genetic material passed from the parents to the offsprings. These are specific phenotypes like color of skin or hair, shape of nose etc.
- Selection includes inheritance and acquiring of certain phenotypes to adapt and survive better, reproduce offsprings. These new offsprings in turn produce new offspring with those phenotypes and result in the entire population.
- Time decides about the various changes and adaptations in species. Certain evolutions like that of whale happened millions of years ago; however, the numerous viruses have evolved recently.
In natural selection,
- Variation is the change in the individual traits.
- Consequences are adaptation of certain traits by individuals which makes them to be better to survive and reproduce
- Heritability refers to the resemblance of the offspring to their parents.
Answer:
Meteoric impact
Explanation:
An impact crater is usually defined as a circular depression or large scale pit that forms when any meteorite hits the surface of planet or moon or any other astronomical object. This causes immense destruction, wiping out a large number of area. The size of the crater depends upon the size of the meteorite or asteroid. For example, the Barringer crater, which is formed due to the meteoric impact on the earth. This crater is located in Arizona and is primarily comprised of a mineral, known as stishovite, which forms under the condition of extremely high pressure, that is generally caused by a high-speed impact.
How to cut what open? and a mask.
Answer:
Eastern United States, Canada, Europe, China, and Japan
Explanation:
