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docker41 [41]
4 years ago
12

Fishes are poor bioindicators of the environmental health of an aquatic system.

Biology
1 answer:
SVETLANKA909090 [29]4 years ago
8 0

Answer:

b. False

Explanation:

Bioindicators are species, species groups or biological communities whose presence, abundance and conditions are biological indicative of a particular environmental condition. Bioindicators are important to correlate with a particular anthropogenic factor or a potentially impacting natural factor, representing an important tool in assessing the ecological integrity (health status of an area, defined by comparing the structure and function of a biological community between a impacted area and reference areas).

Contamination of aquatic environments and water for public use becomes a growing problem as human population growth expands, as does the demand for sufficient and quality water. Fish are very sensitive to contamination of aquatic environments and are therefore strong bioindicators of the environmental health of an aquatic system.

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Look at the image below? When do you think the fault (break) in the rock happened? After which layer was deposited?
ycow [4]

Layer C

Explanation:

The fault break occurred after layer C in the rock sequence.

Layer C is an igneous intrusion through the rock.

To interpret this sequence, we need to apply the law of superposition of strata and cross-cutting .

The law of superposition of strata states that "in an undeformed sequence of strata, the oldest is at the base and the youngest is on top".

Law of cross-cutting states that "intrusions and faults are younger than the rocks they cut through".

  • The intrusion is the last even before the fault because it cuts through layers A, B D and E.
  • After the intrusion then the faulting event happened.

learn more:

Sedimentary rocks brainly.com/question/9131992

#learnwithBrainly

6 0
3 years ago
Suppose that several organisms from a strain of bacteria inherited a mutation that increased their resistance to antibacterial d
satela [25.4K]

Answer:

Natural selection

Explanation:

Natural selection is a process where some organisms are able to reproduce more and survive better due to the presence of beneficial genetic traits in them. The other organisms of the same population that lack these traits are not able to survive and reproduce in the same way. The bacterial having drug resistance are able to survive in the presence of drugs in the surroundings. These bacteria will reproduce more and leave more progeny. Over the generations, the proportion of the bacteria with drug resistance will increase. This represents an example of natural selection.

4 0
3 years ago
Artificial selection may have unintended consequences that can reduce the
Nookie1986 [14]
True. Artificial selection can cause defects ect.
6 0
3 years ago
HELP!!! QUICK QUESTION!!! 80 POINTS!! WILL MARK BRAINLIEST!
hram777 [196]
Hey mate, here is your answer

Three ways by which nitrates are transferred from the land to water are :-

Δ The roots of the legumes undergoes symbiotic association for the intake of nitrogen. They form nitrates. So these plants help in transferring solid nitrate to water nitrate

Δ Animal wastes has nitrates. So these nitrates along with rain water can go to rivers

Δ The lightening strikes contain nitrogen which is converted by plants during nitrogen cycle into nitrates which then eventually goes into water

EFFECT ON HUMAN HEALTH
The nitrates are good when eaten. They help in proper functioning of body parts. But its also harmful if its contain is too much. Nitrate  and Methemoglobinemia. Methemoglobinemia, or blue-baby syndrome, is a condition caused by the inability of the blood to deliver enough oxygen to the body. It is the most well-known effect of exposure to elevated levels of nitrate in drinking water.

EFFECT ON ENVIRONMENT
Nitrate in water is too dangerous for animals in aquatic. They can die if they start consuming nitrates
8 0
4 years ago
What type of sedimentary rock is coarse-grained with angular fragments?
kykrilka [37]

breccias

Explanation:

The type of sedimentary rock with coarse grained angular fragments is known as breccia. Breccia is a sedimentary rock made up of sharp and coarse angular fragments.

  • Breccias signifies a sediment that has not moved too far away from its source of formation.
  • If the source of the rock is far away, the fragments would have been chipped off to form rounded fractions.
  • Breccias usually have a cement made up of calcareous materials or sometimes iron.

Learn more:

sedimentary rocks brainly.com/question/2740663

#learnwithBrainly

7 0
3 years ago
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