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natali 33 [55]
3 years ago
10

2. Heavy metals that pose health hazards to people and ecosystems occur __________. a. as a by-product of agriculture b. over ex

tended periods of time c. very quickly with tragic results d. all of the above
Biology
2 answers:
Nuetrik [128]3 years ago
7 0

Answer:

Many of these substances, when eaten, cause serious health problems over time.

Explanation:

yep

Levart [38]3 years ago
6 0
The appropriate answer is doing. All of the above. Heavy metals are sometimes used in agricultural chemicals and can contaminate both terrestrial and aquatic ecosystems. Heavy metal concentrations can build up overtime as industrialization progressed. Chemical spills can introduce heavy metals to ecosystems quickly with devastating effects.
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In pasteur's investigation, how did he make his test fair?
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How the Scientific Method Works

BY WILLIAM HARRIS

 

Pasteur's Experiment


The steps of Pasteur's experiment are outlined below:

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How tendonitis affect homeostasis? Include body systems that are affected?
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Do predators really kill only the old and sick prey? What evidence is there for this system
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3 years ago
In a population of rabbits, there are 496 black rabbits and 27 white rabbits. Fur color is determined by a pair of alleles where
Troyanec [42]

Answer:

0.96

Explanation:

It is given that

B is the dominant allele which represents the black color

and b is the recessive allele which represents the white fur.

B being dominant will result into black color fur for genotype "Bb"

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Frequency of black fur allele (p) is 0.8

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p + q = 1\\

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q = 1-p\\q = 1-0.8\\q= 0.2

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As per Hardy Weinberg's second law of equilibrium -

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0.64 + 0.32\\= 0.96

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3 years ago
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