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Fill each of the following numbered blanks with ONE suitable word. Write your answer in the boxes.
Man probably could not live without the help of animals. The (1) ___________ of animals in the balance of nature ranks as their most important service to man.
Animals also (2) ___________ man by supplying him with many foods and other useful products. (3)___________ animals, man would have no meat, milk, eggs, or honey, or wool, fur, or silk.
For thousands of years, man has caused changes in the animal kingdom. He has tamed many kinds of animals and used them for food and clothing. He has killed and driven (4) ___________ animals that once attacked him or interfered with his use of land. Today, he tries to (5)___________ many kinds of animals that are in danger of dying out. Like man, most plants depend on animals for many of their basic needs. Without animals, many plants could not (6)____________reproduce. For example, many plants with flowers depend on bees and other insects to (7)_____________ their pollen from plant to plant. Many oak trees grow from acorns that squirrels burry and then forget, or from acorns that deer step on an push deep into the soil. Birds often fly from one place to another with seeds clinging to their feet. The seeds may sprout a great (8) ____________ from the parent plant.
Man probably could not live without the help of animals. The (1) ___________ of animals in the balance of nature ranks as their most important service to man.
Animals also (2) ___________ man by supplying him with many foods and other useful products. (3)___________ animals, man would have no meat, milk, eggs, or honey, or wool, fur, or silk.
For thousands of years, man has caused changes in the animal kingdom. He has tamed many kinds of animals and used them for food and clothing. He has killed and driven (4) ___________ animals that once attacked him or interfered with his use of land. Today, he tries to (5)___________ many kinds of animals that are in danger of dying out. Like man, most plants depend on animals for many of their basic needs. Without animals, many plants could not (6)____________reproduce. For example, many plants with flowers depend on bees and other insects to (7)_____________ their pollen from plant to plant. Many oak trees grow from acorns that squirrels burry and then forget, or from acorns that deer step on an push deep into the soil. Birds often fly from one place to another with seeds clinging to their feet. The seeds may sprout a great (8) ____________ from the parent plant.