B. Oases are sourced by springs and are regions where groundwater intersects the land surface.
Explanation:
The only true statement is that oases are sourced by springs and regions where ground water intersects the land surface.
- Oases are water bodies found in desert and arid areas.
- They are usually surrounded by fertile patches of soil.
- Oases forms when the land surface intersects the water table.
- They can also be fed by temporary surface water from nearby rivers.
Fossil remains have suggested that the region of the Sahara desert was once a lush green tropical region.
In present day, it is a desert with huge underground water reserves in aquifers.
Learn more:
Deserts brainly.com/question/6685795
#learnwithBrainly
Its known as the "master gland"
Hope this helps!
Natural selection<span> acts upon two major sources of genetic variation: </span>mutations<span> and</span>recombination<span> of </span>genes<span> through sexual </span>reproduction<span>. Most </span>mutations<span> do not affect the reproductive fitness of individuals -- some may be beneficial, some may be harmful, and </span>many<span> may be neutral. </span>Mutation rates<span> per gene are generally low</span>
