Each form of life is linked(联系)to all others.Breaking the links puts all life in danger. 41.Food chains suggest that___. A.every life needs food B.plants are very important C.no living thing can live alone D.1iving things need different food 42.From the text we can learn that...
two things in common--all food chains began with the sun, and all food chains become broken up if one of the links disappears. All life depends on energy from sunlight. Only plants can use this energy directly. Their leaves are little factories that use sunlight to make food from water ...
If farmers were directly linked with nearby consumers, a significant portion of these costs could be wrung out. Food prices could come down or farmers’ meager incomes could go up. Maybe both. This helps to explain the spectacular growth of community-based food systems in recent years. More ...
and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain(食物链...
Each kind of life eats another kind of life in order to live, and together they form a food chains (链). Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links disappears (消失). All the...
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γδ T cells play uniquely important roles in stress surveillance and immunity for infections and carcinogenesis. Human γδ T cells recognize and kill transformed cells independently of human leukocyte antigen (HLA) restriction, which is an essential fe
We have demonstrated many times over that we can respond flexibly to challenges, and we see the best con ditions for further growth in the coming years. Our around 600,000 employees around the world are the foundation of our success. I would like to express my thanks to them in ...
This paper aims, first, at documenting vocabulary transfers which can be taken as the linguistic side of transfers of rice culti- vation; second, at identifying chains of language groups linked together by transfers of rice vocabulary and third, at identifying lack of rice vocabulary transfers ...
However, when Okada et al. (2014) solved the crystal structure ofCsKP a few years later, they found that the side chains of the TPK motif point away from kojibiose, or are too small to interact with the substrate. Instead, the residues forming hydrogen bonds with kojibiose in subsite...