The accumulation of mineral salts in irrigated land is called soil salination. One of the undesired effects of irrigation is soil salination. Irrigation water often contains some salt at varying levels. Salt is nasty to plants and does not make themn grow, so farmers have to deal with salination by flushing the soil with extra water to leach salts out. Proper soil management and monitoring of water table is necessary to reduce impact of salination to soil quality.
<span>Our biosphere is the global sum of all ecosystems. It can also be called the zone of life on Earth, a closed (apart from solar and cosmic radiation) and self-regulating system. Geology studies the Earth, and has tendrils in all ecosystems, thus the connection to the biosphere.</span>
<span>There is no set number of genes that produces a new species. </span>
I rerun this most-read post about when human life begins every time that the discussion resurges, which is usually in the shadow of proposed restrictions on women’s reproductive rights. Strong feelings always seem to trump biological facts. Confusion among politicians appears to be apparent concerning when certain events begin or structures appear; whether to track development from fertilization (conception) or the last menstrual period; and even the distinction between an embryo and a fetus. A 4 or 6 week prenatal human is not a fetus — the difference is not arbitrary, it has biological meaning.
