Environmental Studies

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Subsurface drains have been made by all of the following materials EXCEPT ____. a. clay b. lead ... Started by kfurse	1 Replies 17 Views	Jul 21, 2018 by daiying98
About ____ of U.S. cropland is irrigated. a. 13 b. 16 c. 19 d. ... Started by Capo	1 Replies 14 Views	Jul 21, 2018 by Carissamariew
All of the following are problems caused by soluble salts in soil EXCEPT ____. a. strengthened ... Started by haleyc112	3 Replies 113 Views	Jul 21, 2018 by Meganchabluk
Are hydric soils saturated long enough during the growing season to develop anaerobic conditions in ... Started by colton	1 Replies 17 Views	Jul 21, 2018 by zacnyjessica
Have humans have been using irrigation systems for at least 8,000 years? Indicate by YES (Y) or ... Started by codyclark	1 Replies 74 Views	Jul 21, 2018 by mbcrismon
Can subirrigation occur naturally in some places? Indicate by YES (Y) or NO ... Started by Redwolflake15	1 Replies 22 Views	Jul 21, 2018 by jonathanballen97
____________________ is the study of the amount and behavior of water in the soil. Fill in the ... Started by madam-professor	1 Replies 17 Views	Jul 21, 2018 by jessofishing
A nearly saturated zone extending above a perched water table is called a(n) ____________________ ... Started by kodithompson	1 Replies 123 Views	Jul 21, 2018 by lcapri7
____________________ irrigation can be used where it is not possible to surface irrigate. Fill in ... Started by fahad	1 Replies 14 Views	Jul 21, 2018 by reversalruiz
An evaporation ____________________ is a tool used in a traditional method of measuring ... Started by drink	1 Replies 87 Views	Jul 21, 2018 by ashely1112
Soil fertility is the ability of the soil to supply nutrients for plant growth. Indicate whether ... Started by londonang	3 Replies 256 Views	Jul 21, 2018 by juliaf
The ability of a soil to hold nutrients relates to the number of cations it can attract to soil ... Started by chandani	1 Replies 126 Views	Jul 21, 2018 by ju
CEC refers to carbon exchange capacity. Indicate whether the statement is true or ... Started by rayancarla1	1 Replies 16 Views	Jul 21, 2018 by Shshxj
All of the following are commonly accepted rules for determining whether an element is essential ... Started by jc611	1 Replies 41 Views	Jul 21, 2018 by jomama
All of the following are types of silicate clay EXCEPT ____. a. mica b. smectite c. chlorite ... Started by Bernana	1 Replies 68 Views	Jul 21, 2018 by Animal_Goddess
Does most of the dry weight of a live plant consist of carbon, oxygen, and calcium? Indicate by ... Started by vicky	1 Replies 22 Views	Jul 21, 2018 by cdmart10
Do soil colloids usually carry a positive charge that attracts cations from the soil? Indicate by ... Started by future617RT	1 Replies 87 Views	Jul 21, 2018 by Dunkey
The three primary macronutrientsnitrogen, phosphorous, and potassiumalso are sometimes called the ... Started by abern	1 Replies 56 Views	Jul 21, 2018 by Danny Ewald
Ions of nutrient elements that can react with other ions in solution to form new, less soluble ... Started by fox	3 Replies 255 Views	Jul 21, 2018 by emily12345
Soil reaction is measured by the pH scale. Indicate whether the statement is true or ... Started by asd123	1 Replies 56 Views	Jul 21, 2018 by raili21
The midpoint of the pH scale is neither acid or base; it is said to be neutral. Indicate whether ... Started by audie	1 Replies 34 Views	Jul 21, 2018 by Brenm
Coarser-ground limes have better lime efficiency. Indicate whether the statement is true or ... Started by jessicacav	1 Replies 26 Views	Jul 21, 2018 by cici
High salinity is more often a problem in arid parts of the country where natural levels of rainfall ... Started by james	1 Replies 26 Views	Jul 21, 2018 by Dominic
____ is the reactions of carbonates with water to form hydroxyl ions. a. Salinity b. Hydrolysis ... Started by melly21297	1 Replies 22 Views	Jul 21, 2018 by leahchrapun
The benefits of liming include all of the following EXCEPT ____. a. improved nutrient uptake b. ... Started by nramada	1 Replies 25 Views	Jul 21, 2018 by lorealeza77