Alterações climáticas, consequências ambientais dos metais pesados e avaliação de sementes de feijão carioquinha submetidas a diferentes concentrações

Abstract

The present work comprises a study on aspects of climate change and its environmental consequences for living beings. With the advancement of anthropogenic activities and ongoing climate change, heavy metal contamination has become a significant environmental concern. Heavy metal phytoremediation is a promising approach to address environmental contamination, offering relevant ecological, economic and social benefits. In this trial, on a laboratory scale, seeds of cаrioquinhа beans (Phаseolus vulgаris L.), a crop of socioeconomic interest, were used, subjected to different concentrations of Fе2O3 (0.0; 5.0 and 10mgL- ¹), PbSO4 (0.0; 0.01 and 0.05mgL-¹), with the aim of alleviating the capacity and the physiological performance of beans without the presence of heavy metals in different ways. s concentrations. Lead sulfate harms the growth of roots, the total length of seedlings, as well as reducing the dry mass of the aerial part and the fresh mass of roots and in higher concentration, it reduces the percentage germ of germination of seeds. Iron oxide in higher concentrations can reduce the electrical conductivity of seeds. The main consequence of climate change is an increase in the frequency and intensity of natural disasters, such as more intense storms, prolonged droughts and forest fires. Furthermore, declines in the productivity of agricultural crops can affect the planet's food security, affecting the most vulnerable communities that depend on local agriculture for their subsistence. Biodiversity loss is also a concern, as many species cannot adapt quickly to changing climate conditions. To mitigate the effects of climate change, it is necessary to significantly reduce greenhouse gas emissions. This can be achieved through a transition to renewable energy sources, greater energy efficiency, sustainable transportation and less carbonintensive agricultural practices. Furthermore, preserving and increasing vegetation cover is essential to absorb CO2 from the atmosphere.