1) After the Industrial Revolution, there was a dramatic ____ in young men working in agriculture. a) migration b) decline c) climate d) habitat 2) A number of ____ fish, including the introduced tilapia species, wiped out most of the river's water beetles and bugs. a) predatory b) colony c) function d) mechanism 3) This area provides an important _____ for almost 400 species of migratory birds, 80 species of mammals, and 40 species of reptiles and amphibians. a) pattern b) theory c) habitat d) population 4) Fish are represented at several trophic levels in aquatic systems, from detritivore and ____ to carnivore. a) herbivore b) predatory c) trait d) species 5) The lavan rhinoceros is often called the rarest large mammal on Earth and perhaps the most _____. a) average b) colony c) trait d) endangered 6) Research from Southampton hospital indicates that the house dust mite is the biggest allergenic _______ of asthma. a) contribute b) trigger c) habitat d) extinct 7) The annual animal _______ occurs between June and September with millions of animals taking part, attracting valuable foreign tourism. a) migration b) herbivore c) population d) species

COLLINS VOCABULARY and GRAMMAR for the TOEFL TEST-UNIT 7

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