Answer:
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away.
Explanation:
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Blood going to the lungs is deoxygenated, blood going to the body is oxygenated
Answer:
D, core
Explanation:
The outer core is located just below the mantle. It is made of liquid iron and nickel. Scientists believe this layer is responsible for the Earth's magnetic field. It is about 2,200 kilometers thick and around 4,500 degrees Celsius.
Process of population occurs when allele frequency in a population may change due to fundamental forces of evolution.
For example natural selection, genetic drift, gene flow and mutation. This process takes place when new traits transfers genes between populations for example between species or in migration.
Speciation of population to separate species will take forms like sympatric and allopatric. In allopatric is where a physical barrier is been able to separate population why sympatric the population which is sharing the geographical location is formed by environment factors to separate.
If they are separated post zygotic or prezygotic between species.