Answer:
The decision of "racial segregation in public school" did Brown versus Board of education 1954 overturn.
Explanation:
The well known supreme court case in 1954 of Brown versus Board of Education of Topeka in which the justices had taken control unanimously over the racial segregation of children in the public school are completely unconstitutional. The brown versus Board of Education is the biggest milestone of the civil rights movement, which has helped to establish the precedents that are being "separate-but-equal" education rights and other services are not equal at all.
The answer to your question would be ( Distant stars give off less light )
The two ions are you most likely to see adsorbed to the exchange complex of a soil in an arid environment are Na+, K+, Ca2+.
What are exchangeable bases in soil?
Exchangeable bases allow alkali and alkaline earth metals (mainly calcium, magnesium, potassium, and sodium) to bind to the organic constituents of clays and soils, to each other and to other positively charged ions in soil solutions. Broadly defined as anything that can be exchanged with ions.
What is the exchange capacity of soil?
The total number of cations a soil can hold, or its total negative charge, is the soil's cation exchange capacity. The higher the CEC, the higher the negative charge and the more cations it can hold. CEC is measured in milliequivalents per 100 grams of soil.
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