The ocean ecosystem is very large. What is the name for the tiny organisms that are the base of the ocean food chain? A. Whales B. Plankton C. Sharks D. Dolphins 相关知识点: 试题来源: 解析 B。解析:浮游生物(Plankton)是海洋食物链的基础,是非常微小的生物。鲸鱼(Whales)、鲨鱼(Sharks)和...
Open oceans span several kilometers from coast to coast and run hundreds of kilometers deep. To study oceans and its organisms that live there, the open ocean is divided into different layers or zone. The definition of thepelagic zoneis that area of the ocean excluding its coastal waters and...
Just like other organisms, coral requires nutrients so it’s best toensure these are prevalent. The best nutrient is fish excrement, which contains nitrates and phosphates for the SPS. Bacteria and algae will eat the excess nitrates and phosphates. Perform routine tank cleaningsto ensure a healthy...
and sexual reproduction, enabling slowly-reproducing organisms to have dramatically different DNA sequences and physical traits from their parents, increasing their odds of survival.All of this, in tandem, led to the Cambrian explosion some 550-600 million years ago. But mammals wouldn’t emerge fo...
Blue whales prefer to live very far beneath the ocean's surface where food is plentiful and obstacles are few. Populations have been found in the northeast Pacific ocean, Indian ocean, north Atlantic ocean, and sometimes parts of the Arctic ocean. ...
Sea urchins are small, spiny creatures that, while they sometimes look beautiful, can inflict a sharp sting if touched. Because the species has endured so long in the earth's oceans – 500 million years or so – the sea urchin is studied to explore development processes in living organisms,...
Where do ocean sunfish live? What fish eat algae in coral reefs? How many fish live in the ocean twilight zone? How long do beneficial nematodes live? What color is coral reef? What amphibians can live with fish? What ammonia conditions are toxic to marine organisms?
It is also the myriad of organisms that support food production through ecosystem services – called ‘associated biodiversity’ in policy speak. This includes all the plants, animals and micro-organisms (such as insects, bats, birds, mangroves, corals, seagrasses, earthworms, soil-dwelling fungi ...
While we’re still a long way from seeing robots with fully functional living skin walking among us, this research from the University of Tokyo opens up exciting possibilities. It’s a step towards creating robots that blur the line between machines and living organisms. ...
Throughout the next three decades, the list of keystone species grew to include a wide variety of organisms, including sea otters, parasitic wasps, elephants, and tiger sharks, as well as bats and bird species that assist with pollination. Sudden Changes in the Food Chain The dodo bird is...