根据上文“For the final exam, instead of a written test, everyone will be required to give a ten-minute presentation on one of the science topics we covered this year(期末考试不是笔试,而是要求每个人就我们今年涉及的一个科学主题做10分钟的演讲 )”可知,期末考试改变了考试形式,肯定会有紧张不安...
“Tadpoles,” she began, “are frogs or toads at the beginning of their life cycle.” Then, something happened that she did not ___ at all. She relaxed. Once she began, the words ___ smoothly. She could see Mr. Marx start to smile and nod ___. After weeks of ___ this moment...
Do cane toads eat frogs? Is the okapi extinct? Are whale sharks extinct? Were mammals extinct in the Cretaceous Period? Do cane toads croak? How did the dinosaurs become extinct? Why did dinosaurs go extinct in the Cretaceous extinction? Did birds exist with dinosaurs? Are all of the sauris...
This species is victim to a long list of predators. Reptiles that prey on the insect include toads, bullfrogs, and wood frogs. Bird predators include hummingbirds, grackles, and tanagers, and mammal predators include bears, raccoons, skunks, and honey badgers. Additionally, many insects and sp...
What was the first animal to evolve? For biologists to call it an animal, an organism needs to be able to eat and must consist of multiple nucleus-containing cells that have specific functions. Sponges, filter-feeding organisms often anchored to rocks or the sea floor, were the first animals...
Byline: Damian Bathersby
Costa Rican Frogs & Toads Evergreen Toad in Corcovado National Park, by Bret Love & Mary Gabbett 17. Evergreen Toad Latin Name:Incilius coniferus Habitat:Tropical rainforests, lowlands Size:2-3.7 inches Diet:Small invertebrates Conservation Status:Least Concern, population stable ...
What was the first animal to evolve? For biologists to call it an animal, an organism needs to be able to eat and must consist of multiple nucleus-containing cells that have specific functions. Sponges, filter-feeding organisms often anchored to rocks or the sea floor, were the first animals...
-"Eat a candy less, study a minute more, and count to five before crying". Johnny could not believe it. - "Just that?" - "Yes, just that." - said his father, -"It's very simple, but I warn you that it won't be easy." Johnny went off happy as a lark, ready to follow...
“Tadpoles,” she began, “are frogs or toads at the beginning of their life cycle.” Then, something happened that she did not ___ at all. She relaxed. Once she began, the words ___ smoothly. She could see Mr. Marx start to smile and nod ___. After weeks of ___ this moment...