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Abstract:

The conditions of the surface of Venus are extremely harsh, and there is no naturally evolved life on Venus. E. coli is a bacteria with a number of subtypes and adaptations to varying environments. This paper covers a number of adaptations a theoretical colony of E. coli bacteria could evolve, based on pre-existing adaptations of E. coli to its natural environments

Abstract:

Heterogeneous electrochemistry induced by Martian dust activity is an important type of atmosphere-surface interaction that affects geochemical processes at the Martian surface and in the Martian atmosphere. We have experimentally demonstrated that heterogeneous electrochemistry stimulated by mid-strength dust events can decompose common chloride salts, which is accompanied by the release of chlorine atoms into the atmosphere and the generation of (per)chlorates (chlorates and perchlorates) and carbonates. In this study, we present quantitative analyses on the above products from 26 heterogeneous electrochemical experiments on chloride salts. Based on these quantifications, our calculation indicates that such atmosphere-surface interaction during a portion of Amazonian period could accumulate the observed abundance of (per)chlorates, carbonates, and HCl by landed and orbital missions, and thus can be considered as a major driving force of the global chlorine-cycle on Mars. This study emphasizes the importance of measuring the electrical properties of dust activity on Mars.

Abstract:

Misconceptions are understandings of concepts that are not in accordance with scientific concepts. Teachers have the potential to experience misconceptions and misconceptions that occur in teachers can result in students also experiencing misconceptions. Research that examines science misconceptions in elementary school teachers is still rare, so there is a need for research examining science misconceptions in elementary school teachers, especially in elementary school teachers who are certified educators. Therefore, this study aims at determining whether science misconceptions occur in elementary school teachers with teaching certificates or not and how much misconceptions are experienced and the misconceptions occurred. This study employs descriptive quantitative by involving 17 certified elementary school teachers who are classroom teachers teaching several subjects in elementary schools including science subjects. Data collection was done by conducting a four tier misconception diagnosis test and the result was analyzed using by referring to four tier test concept developed by various researchers. The findings indicated that primary school teachers possessing teaching certificates exhibited science misconceptions at a rate of 22%, placing them in the low category of scientific understanding at 66%. Despite the relatively low occurrence of misconceptions, it is advisable for certified primary school teachers to further enhance their grasp of the concepts they impart to prevent any potential hindrance to the learning process