When we think of desertification, we first think about prolonged drought conditions. Desertification can also be the result of degradation of the soil in
an area as the most recent definition includes the permanent loss of fertility in an area. All of the choices below result in soil degradation leading to
desertification EXCEPT
A) The buildup of salts in irrigated soils due to evaporation.
B) The presence of rocky fields that have been tilled but not planted.
C) Overfarming or drought can change the soil so that rain no longer penetrates
D) Deforestation results in erosion: nutrient-rich top soil blows or washes away.
Answers: 1
Biology, 21.06.2019 18:00
The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community
Answers: 2
Biology, 21.06.2019 21:30
Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1
Answers: 1
Biology, 22.06.2019 03:50
What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen
Answers: 1
Biology, 22.06.2019 10:40
_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater
Answers: 2
When we think of desertification, we first think about prolonged drought conditions. Desertification...
Mathematics, 31.05.2021 01:50
Mathematics, 31.05.2021 01:50
History, 31.05.2021 01:50
English, 31.05.2021 01:50
Computers and Technology, 31.05.2021 01:50
History, 31.05.2021 01:50
Biology, 31.05.2021 01:50
History, 31.05.2021 01:50
Mathematics, 31.05.2021 01:50