A. ecosystem B. species diversity C. food chain D. population 相关知识点: 试题来源: 解析 B。本题考查生态科学的基本概念。A 选项“ecosystem”指的是生态系统;C 选项“food chain”是食物链;D 选项“population”是种群。而“species diversity”指的是物种多样性,符合题意。反馈...
“There is an incalculable amount of money, in my opinion, that everyone is leaving on the table that needs to be captured,” Karlov says. Andrew B. Brettler Photo : Courtesy Image Partner Berk Brettler Best-known for work with controversial figures like Prince Andrew and Danny Masterson, ...
Biologicaldiversity,orbiodiversity,isthevarietyoflifeonearth.Itcomprisesvariabilitywithinspecies,amongspecies,andofecosystems.Italsoreferstothecomplexrelationshipsamonglivingthings,andbetweenlivingthingsandtheirenvironment.Biodiversityanditscomponentsprovideanumberofgoodsandservicesthatsustainourlives,ourlivelihoods,andtheenvi...
The study comes as the California Ocean Protection Council (COPC) aims to develop a plan for achieving zero death for whales in the California Current Ecosystem this year. Achieving such a goal requires understanding the key drivers of whale deaths and opportunities for policy change, the report ...
All this data needs to be processed and is part of the components of an analytical ecosystem capable of integrating, analyzing, and sharing data in real time. Data is the backbone of a smart city. Smart cities require intelligent data management that shares information, enables application ...
“Nobody is listening to each other anymore, and we’re living through a tremendous amount of unwarranted and unnecessary divisiveness,” says Glaser, who earlier this year flagged intellectual property and employment law as growing sectors. “I’m most proud of getting things settled without ...
Matter is constantly recycled in ecosystems: individual atoms take countless trips through biogeochemical cycles, passing through living things, air, water, and/or rocks and soil. a. True b. False The number of species on an island depends on the size of the islan...
Botany, the study of plants, has a highly valued position in the history of human knowledge. From what we have 1)observedof preindustrial (工业化以前的) societies, a detailed study of plants must have been pretty ancient. Plants are the 2)basisof food for all living things, even for som...
Sierra Leone, like most other SSA countries, has difficulties in its agricultural sector and in achieving its food security needs. Studies estimate that the country has over 70% of the populations below the national poverty line, 52% living on less than US$1 per day, and 26% are not able...
And he believes they fall short of producing the respect for living things that comes from the actual dissection experience. Jonathan Balcombe, a biologist and a life-long animal rights supporter, says, “I spent many years as a biology lab teacher. I remember the horrible feeling I had when...