the squirrels were pests
1Christmas tree pests and weeds — An entomologist checks Scots Pine for pine shoot beetles at a Christmas tree farm near East Lansing, Michigan. Pine and fir trees, grown purposely for use as Christmas trees, are vulnerable to a wide variety of pests, weeds and diseases. Many of… …
2Great American Interchange — The Great American Interchange was an important paleozoogeographic event in which land and freshwater fauna migrated from North America via Central America to South America and vice versa, as the volcanic Isthmus of Panama rose up from the sea… …
3Chestnut — For other uses of chestnut , see Chestnut (disambiguation). For other uses of chinquapin or chinkapin , see Chinquapin (disambiguation). Chestnut Sweet Chestnut Castanea sativa Scientific clas …
4Richardson's Ground Squirrel — Taxobox name = Richardson s Ground Squirrel status = LR/lc | status system = IUCN2.3 regnum = Animalia phylum = Chordata subphylum = Vertebrata classis = Mammalia ordo = Rodentia familia = Sciuridae genus = Spermophilus species = S. richardsonii… …
5Christmas tree cultivation — A Christmas tree farmer in the U.S. state of Florida explains the pruning and shearing process of cultivation to a government employee. Christmas tree cultivation is an agricultural, forestry, and horticultural occupation which involves growing… …
6Europe — /yoor euhp, yerr / for 1; /yoo roh pee, yeuh / for 2, n. 1. a continent in the W part of the landmass lying between the Atlantic and Pacific oceans, separated from Asia by the Ural Mountains on the E and the Caucasus Mountains and the Black and… …
7Hunting — Hunter redirects here. For other uses, see Hunter (disambiguation). For other uses, see Hunting (disambiguation). Boar hunting, tacuinum sanitatis casanatensis (14th century) Hunting is the practice of pursuing any l …
8Animal trapping — Trap nets used to trap birds (tacuinum sanitatis casanatensis); 14th century. Animal trapping, or simply trapping, is the use of a device to remotely catch an animal. Animals may be trapped for a variety of purposes, including food, wildlife… …
9North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …
10evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
