heavy metals are natural elements and are found in trace amounts everywhere and in everything. the problem is when they accumulate to more then trace amounts.
Easy answer you could have come up with by yourself I think. Crude oil, means oil straight from the ground and not refined yet. Heavy metals means not light metals. So not iron or sodium but Lead and other heavy stuff. Since oil comes from the ground and metals are mined from the ground, it makes sense that they could be found together. So if the teacher wants a different answer he should have said "how is crude oil formed" or something like that.
Soft metal is more like just soft rock but heavy metal is like scremos and other REALLY HEAVY metal and black metal is REALLY REALLY HEAVY like they use death guturals and they are the hardest to understand.
Ferrous metals are metals with a trace of iron in them. Some examples of ferrous metals would be steel, pig iron and other alloys, for example stainless steel. Ferrous metals are known for their magnetic properties.
they had to trace a route to it
Humans cannot digest metals; so there are no edible metals in the true sense of the word. There are, however, trace metals in certain foods. Iron, for instance.
B.ZincC.Iron
Her Brother. That Would EXPLAIN it in the CYRUS part
tracks,burrows and coprolite
tracks,burrows and coprolite
Atomic Absorption Spectroscopy (AAS) is a technique used in heavy metal analysis to determine the concentration of metals in various samples. In this method, a sample is atomized in a flame or graphite furnace, and the metal atoms absorb light at specific wavelengths corresponding to their unique energy levels. The amount of light absorbed is proportional to the concentration of the metal in the sample, allowing for quantitative analysis. AAS is particularly effective for detecting trace levels of heavy metals in environmental, biological, and industrial samples.
a trace fossil is like cast, mold, or trace fossil