New varieties of Blank______ that are adapted to survive in iron-rich, acidic soils turned the Cerrado in Brazil into a major agricultural region.Multiple choice question.wheatricecornsoybeans

The Cerrado in Brazil became a major agricultural area when Blank______.Multiple choice question.new government policies paid farmers incentives for boosting agricultural productionnew varieties of soybeans were developed to grow in the region's iron-rich soilsgrowing interest in sustainable farming made farming the region economically viable

Much of the U.S. rangelands have been degraded to biological deserts because Blank______ has allowed inedible species such as mesquite and sage to take over.Multiple choice question.agriculturerotational grazingovergrazing

The agricultural Northeast region where plantation agriculture thrived during the colonial era, still grows _____ along the coast and other crops inland where rainfall is reduced.Group of answer choicestobaccosugarcanerubberbananascoffee

Crop yields increased dramatically in the United States after Blank______ crop varieties were introduced.Multiple choice question.hybridorganicalternative

Multiple Select QuestionSelect all that applySeagrass ecosystems Blank______.Multiple select question.grow on rocky substratecontain many different species of plants and animalsare very productiveoccur mostly in deep waters