[单项选择]Text 4 Understanding how nature reacts to climate (气候) change will require checking key life cycle events—flowering, the appearance of leaves, the first frog calls of the spring—all around the world. But ecologists (生态学家) can’t be everywhere, so they’re turning to non-scientists, sometimes called citizen scientists, for help. A group of scientists and educators set up an organization last year called the National Phenology Network. “Phenology” is what scientists call the study of the timing of events in nature. One of the group’s first efforts is to ask scientists and non-scientists to collect information about plant flowering and leafing every year. The program, called Project BudBurst, collects life cycle information on a variety of common plants from across the United States. People taking part in the project record their information on the Project Budburst website. “People don’t have to be scientists一they just have to look around and see what’s in their n
A. study animal behavior all year round
B. invite citizen scientists to do scientific research
C. collect information on the life cycles of common plants
D. help ecologists learn about wildfires in western United States