Bioindicators are also known as macroinvertebrates that can give scientists clues about the health of a river or stream that other indicators cannot show. They help determine the health of the river or stream.
Bioindicators are organisms or species that are sensitive to changes in the environment, making them useful for monitoring and assessing the health of ecosystems. They can provide early warning signs of environmental degradation or pollution, helping to identify and address issues before they become more severe. Bioindicators are valuable tools for environmental management and conservation efforts.
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Five significant digits. Remember that all non-zero digits are significant, and all zeros in-between significant digits are significant.
Four - zeros between significant digits are significant.
0.007 has one significant figure. The 7 is significant because all non-zero numbers are always significant. The leading zeroes are not significant.
Only one of them is significant. The leading zero (zero to the left) is not significant. The trailing zero (rightmost) is significant. To recap, only the zero following the seven is significant. See the related links for a really good article on significant digits.
BIOINDICATORS
Daphnia(water fleas) are used as bioindicators in water. If you put daphnia in a river and they die, it means that there is some sort of unnatural chemical in the water that is not supposed to be there.
Bioindicators
Bioindicators
The indicator is litmus paper. :)
Euglena Trachelomonas Phacus
significant
Three. All nonzero digits are significant and zeros in between significant digits are always significant.
All nonzero numbers are significant (1, 3, and 7 are significant). Zeros in-between significant digits are significant (the first zero is significant). All zeros after the decimal point that aren't placeholders are significant (last zero is significant).
Trailing zeros ALWAYS count as significant figures, so 700.0 would have 4 significant figures.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
They fulfill the niche of top predator, maintaining balance in the ecosystem. Their eggs/hatchlings provide food sources for other predators. Some scientists have used crocodiles as bioindicators - that is, they are animals which can tell us about the health and stability of the habitat it lives in. That's not 10 but hopefully it helps some.