A stepwise change in atmospheric oxygen (O2) levels during the Ordovician has been attributed to the emergence of land plants. This phenomenon is tied to a major baseline shift in the stable carbon isotope (δ13C) curve and inferred increase in nutrient delivery and enhanced primary productivity...
百度试题 结果1 题目4. During the day, plants take in o$$ C O _ { 2 } $$ and produce oxygen. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
However, Arabidopsis fwa epigenetic alleles have permanently lost the promoter DNA methylation, resulting in overexpression of FWA and a late-flowering phenotype in which plants produce an increased number of leaves prior to flowering24. When the MBD–ZF108 fusions were transformed into the fwa back...
During which stage of plant growth do plants start to produce flowers? A. Germination stage B. Seedling stage C. Maturity stage D. Vegetative stage 相关知识点: 试题来源: 解析 C。成熟阶段植物开始开花。发芽阶段是种子开始生长,幼苗阶段是植物还很幼小,营养生长阶段主要是植物生长叶子和茎等。
The Bølling-Allerød interstadial (14,700–12,900 years before present), during the last deglaciation, was characterized by rapid warming and sea level rise. Yet, the response of the Arctic terrestrial cryosphere during this abrupt climate change re
Plants need to be looked after and protectedduringbad weather. 天气恶劣时要留意照看好植物。 柯林斯高阶英语词典 There are few sellers in the market, so price remains high. 市场上卖方寥寥无几, 因此价格仍然是高的. 期刊摘选 Duringthat time, she so gained my aunt's confidence that she was put...
In many places the weather changes during the year. These changes are called seasons. Inthe north and south there are four seasons in a year. Each season brings changes that aresignificant for plants and animals that live in different parts of the world.Spring starts when the day and night ...
9.A unique thermo-solar power station Germasolar in southern Spain can work even on cloudy days:energy stored when the sun shines lets it produce electricity even during the night. It is the first solar power station in the world that works 24 hours a day!This is how it works:the panels...
The research interest in Peru’s western arid coast (Costa) was in the well-being of persons displaced short distances away from their homes by floods during the 2017 Coastal El Niño (CEN) event for two reasons. First, Peru’s coast is periodically affected by severe El Niño-driven ra...
Why do plants need water during the process of photosynthesis? Given that plants produce ATP and NADPH from photophosphorylation, for what purposes do they reduce CO2 to triose phosphate? a. At night, plants need the ATP produced by glyco...