How do monarch butterflies affect ecosystems? A. They help birds to catch their food. B. They produce seeds for wild plants. C. They contribute to crop production. D. They bring food to other animals. 相关知识点: 试题来源: 解析 C 解析细节理解题。根据第三段中“...makingthemasignificant...
题目 How do oceans affect you?If you live far from the coast,you might think they don't.But life on this planet depends on the ocean.It covers almost three-quarters of the planet and holds 97 percent of Earth's water.The phytoplankton (浮游植物)that live on th...
The living parts of an ecosystem are calledbioticand the nonliving portion is calledabiotic. Abiotic factors include the sun, soil, temperature, water and air. Ecosystems can range in size from a single plant to the Amazon rainforest to the bacteria that live in your intestines. Turning a Bot...
Tansley's definition of ecosystem acknowledged that there was a level of scientific inquiry that could encompass all the organisms in the wolverine's home (biotic factors), in addition to the stuff that's not alive (abiotic factors). "The ecosystem concept ecologists now use has been refined ...
factors that influence the pH of water, especially seawater. Though these factors in nature don’t have as large of an effect in a small and contained fish tank setting, the theory behind them has been applied to aquarium equipment and media to make adjusting pH easier for fishkeeping ...
The concept of life‐history traits and the study of these traits are the hallmark of population biology. Acknowledging their variability and evolution has allowed us to understand how species adapt in response to their environment. The same traits are also involved in how species alter ecosystems ...
Science Ecosystems How does fishing affect coral reefs?Question:How does fishing affect coral reefs?Fishing:Many people look at fishing as a relaxing and enjoyable hobby. However, as many as 1.2 million people are employed by the fishing industry in the United States. As of 2015, the fishing...
How do boats affect lake eutrophication?Boats:Boats are man made vessels that can be used to move on water. They can be used to transport goods on rivers and they also play an important part in helping people conduct water based activities like fishing....
fish species relative abundance increased between the historical and contemporary time periods throughout the Spring River. Occupancy of all fishes increased over time in the formerly metal contaminated portion of the Spring River, becoming similar to values in the reference reach. Changes in species ...
This can be used to analyse the natural distribution of fines in a coastal zone and the effects of human interventions thereupon. It consists of three components: These components are schematically drawn in Fig. 7. The presence or absence of fines in the seabed depends on all three factors. ...