Sentences with phrase «living organisms accumulate»

Not exact matches

Roughly 800 million years ago, in the late Proterozoic Eon, phosphorus, a chemical element essential to all life, began to accumulate in shallow ocean zones near coastlines widely considered to be the birthplace of animals and other complex organisms, according to a new study by geoscientists from the Georgia Institute of Technology and Yale University.

But lab - based efforts are insufficient to understand and predict the individual or collective impacts long - lasting synthetic chemicals and their breakdown products can have when they enter an ecosystem and start to accumulate — and potentially grow more toxic — in the tissues of living organisms.

By accumulating the understanding of the ecology of small marine organisms, she hopes to deepen an understanding of the spread of life in the entire ocean.

When fish feed on organisms that live around bottom - growing plants and on the mud in the nearshore areas (benthic organisms in the littoral zone), they accumulate less mercury than when they are feeding on plankton in the open water.

The skeletons of the dead corals, the living corals, the shells of other organisms, and the lime secreted by certain encrusting and creeping algae accumulate and form the physical structure of the reef.

His approach is based on the rigorous application of state - of - the - art isotopic and organic mass spectrometry to study molecular fossils (biomarkers) derived from organisms across the three Domains of life, accumulated in modern and ancient natural archives from both the marine and terrestrial realm.

Criteria Description Fish Toxicity Measure of the acute toxicity to fish (both saltwater and freshwater) Daphnia Toxicity Measure of the acute toxicity to Daphnia (invertebrate aquatic organisms) Algae Toxicity Measure of the acute toxicity to aquatic plants Persistence / Biodegradation Rate of degradation for a substance in the environment (air, soil, or water) Bioaccumulation Potential for a substance to accumulate in fatty tissue and magnify up the food chain Climatic relevance Measure of the impact a substance has on the climate (e.g., ozone depletion, global warming, etc.) Other Any additional characteristic (e.g., soil organism toxicity, WGK water classification, etc.) relevant to the overall evaluation but not included in the previous criteria 1.3.3 Material Class Criteria The following material classes are flagged due to the concern that at some point in their life cycle they may have negative impacts on human and environmental health.