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earnstyle [38]
3 years ago
10

Researchers in Alaska were interested in increasing the sockeye salmon (Oncorhynchus nerka) population in three coastal lakes. T

o accomplish this, the ponds were treated with fertilizers. As a result, zooplankton biomass increased between 40% and 700% in the three lakes. The substantial growth in zooplankton would suggest that prior to these experiments, these lakes were __________________.
Geography
1 answer:
JulijaS [17]3 years ago
8 0

Answer:

going under eutrophication process.

Explanation:

Body waters like lakes normally produces or receives some organic wastes, from the same living things of the environment or by pollution. In this example  the fertilizers that were dropped into the lake, they have a lot of nitrogen, carbon or phosphorous compounds, that by the passing of the time will be consumed by the living things and elevate the production of zooplankton. with the increase of zooplankton, the population of fish is expected to increase also.

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Who first observed the phases of Venus
Sidana [21]

Galileo is the answer

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3 years ago
If you were flying from London to Jakarta by a relatively straight-line route, in which of these cities would you be most likely
shepuryov [24]

Answer:

Given option

Delhi

capetown

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Answer is Delhi

Explanation:

Aircraft enrout Jakarta from London usually stop in Delhi

5 0
3 years ago
What can scientists learn from magnetic striping patterns? Select the three correct answers.(2 points)
kari74 [83]

Hello. This question is incomplete. The full question is:

What can scientists learn from magnetic striping patterns? Select the three correct answers.

1. the cause of magnetic pole reversals

2. the year the next magnetic reversal will take place

3. the location of ancient faults caused by seismic activity

4. the exact location of the next earthquake along the California coast

5. the direction plates are moving relative to each other

6. the speed of one plate as it subducts below another plate

Answer:

The direction plates are moving relative to each other

The speed of one plate as it subducts below another plate

The location of ancient faults caused by seismic activity

Explanation:

Magnetic striping patterns are very valuable systems for understanding the factors that promote polar variability of the ocean floor. This is because these systems are formed exactly by changes in this polarity, presenting lines (similar to a zebra), which allow scientists to interpret them and have valuable information about the movement of the direction plates towards each other, the speed that a plate reaches the subduz below another plate and the location and old faults that were caused by the existence of seismic activities.

6 0
3 years ago
Can anyone come up with a unique plant food product that doesn’t exist be sure to include a description and the price of the pro
den301095 [7]

Answer:

should in case you see him tell tell the message.

8 0
2 years ago
Why is Antarctica governed by a treaty instead of a government? How might future developments in drilling and cold-weather techn
Maslowich

Answer:

There is no "Government of Antarctica" in the way that we understand it in the rest of the world. This is largely as there are no indigenous peoples and no-one lives there permanently, the only habitations are scientific stations that people visit for short time periods, usually from a couple of months to just over a year.

Representatives of the 12 nations met in Washington D.C. in 1959 to draft and sign the Antarctic Treaty - (summary here). This agreement dedicated the entire continent to peaceful scientific investigation. It came into effect in 1961 and all territorial claims were suspended. In 1991, 24 nations approved a protocol (addition) to the treaty that would ban oil and other mineral exploration for at least 50 years, this came into force in 1998 and stands until 2048, at which point it will be renegotiated, to change or remain as decided at the time. It is possible for the treaty to be changed before 2048, though it would take the unanimous agreement of all of the consultative parties to do so, as of 2015 there are 29 nations that are consultative parties.

There are now 52 countries that have signed the Antarctic Treaty - which represent about 80% of the world's population.

The key objectives of the Antarctic Treaty are:

To keep Antarctica demilitarized, to establish it as a nuclear-free zone, and to ensure that it is used for peaceful purposes only.

To promote international scientific cooperation in Antarctica.

To set aside disputes over territorial sovereignty.

The result is that Antarctica is one of the few places in the world which has never been affected by war, where the environment is fully protected and where the priority is scientific research. The Antarctic Treaty has ensured that this has continued and will continue for the foreseeable future.

The Treaty covers the areas south of 60°S latitude, extending to the South Pole.

In general for individuals at Antarctic bases, the national laws of their home country applies to them personally.

3 0
3 years ago
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