1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pavlova-9 [17]
3 years ago
13

1) A region of the country is rapidly growing in population, causing the demand for electricity to go up each year. As a result,

a new source of electricity is needed. This particular region of the country has plenty of agriculture, rivers, and access to coal deposits underground. Which of the following would be the cheapest way for this region of the country to make electricity, have minimal impact on the environment, yet not add carbon dioxide to the atmosphere?
Group of answer choices

A)Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity

B)Use the coal deposits to generate electricity in a few coal fired facilities

C)Build a nuclear power plant in the middle of the region

D)Build dams along the rivers to generate electricity


2)The image provided shows a partial river food web.



The local town relies on this river ecosystem to sustain their population both economically and as a source of food. Using the food web provided, which statement provides the best reasoning for regulating the amount of fish removed from the river by humans.

Group of answer choices

A)Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.

B)Regulation will increase the amount of energy transferred from the catfish to the eagle.

C)Regulation will allow contaminated sediments to decrease in the river due the removal of the contamination source.

D)Regulation will ensure that carp will not overpopulate the ecosystem and begin to consume larger organisms like the salmon.
Biology
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

The cheapest way for the country to make electricity would be

A) Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity

The statement provides the best reasoning for regulating the amount of fish removed from the river by humans is:

A) Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.

Explanation:

<em>For the electricity, the use of Biomass meets the demands due to the fact that, it has minimal impact on the environment, does not add carbon dioxide to the atmosphere. Also, it is renewable form of energy.</em>

<em />

<em>For the regulation of the amount of fish removed from the river helps to maintain the ecosystem balance. If it was not done, the fishes found in the river will be totally harvested thereby disrupting the chains in that river ecosystem.</em>

You might be interested in
3) identify and describe three abiotic characteristics of ecosystems. Give an example of how each
HACTEHA [7]

Answer:

The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.

Explanation:

In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.

Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.

--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.

--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.

--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.

3 0
2 years ago
Scientists have been studying threats to coral reefs. Some reefs around the Southeast shore of Australia have experienced increa
Vladimir79 [104]
I would say the last one. Yes, the coral reef in the south is being threaten but, it’s not the only one. Many other reefs are being threatened. Why? To find the problem to this reef you need to find the problems of other reefs and compare the data. Which ever the most problem cause you get rid of that first.
3 0
3 years ago
Read 2 more answers
Vertebrate locomotion results from the contraction of muscles anchored to what other tissue?
liraira [26]

Answer:

Bones

Explanation:

Bones are tissues that provide the body with rigidity. It also acts as the body's supporting structure.

The bone helps to maintain the body's shape at all times and provide a surface for the attachment of muscles. Joints are the points of contact between two bones. The bones, muscles and joints are very important in the locomotion(movement) process because there’s a synergy between them.

8 0
3 years ago
Read 2 more answers
Cells will usually divide if they receive the proper signal at a checkpoint in which phase of the cell cycle? see concept 12.3 (
NeTakaya
The correct answer is the interphase.

The cell cycle consists of three phases: the interphase (G1, S, G2) the mitotic (M) phase, and cytokinesis. <span>The first checkpoint of the cell cycle is G1 checkpoint which is between G1 and S phase when cell checks its size, nutrients, molecular signals, DNA integrity. The second checkpoint is G2, just before the mitotic phase, when cell checks DNA integrity and DNA replication. Those two checkpoints are the ones before division, other like M checkpoint is during the mitosis.</span>
3 0
3 years ago
Which of the following would change the allele frequencies of a
Readme [11.4K]
C is the correct answer
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following would be used to control mice and rats?
    14·2 answers
  • What do people call an atom that has gained or lost electrons?
    8·1 answer
  • Which best describes this behavior? It is beneficial only to the males that do not fertilize eggs. It is beneficial only to the
    12·1 answer
  • A thousand years ago, the same amount of ___________ was on earth as today.
    10·2 answers
  • Which of the following is an example of an environment with a carrying capacity that has been overloaded?
    12·1 answer
  • Plants can reduce global warming, because photosynthesis requires _______.
    5·2 answers
  • You are working the scene of a collision involving a​ tractor-trailer that is hauling an unknown chemical. After it has been det
    11·1 answer
  • If an element Has 35 protons and 36 electrons is it called an cation or anion
    14·2 answers
  • 5. A woman with AO blood types has children with a man with AB blood. There is a mix up at the
    13·2 answers
  • Explain how a nutrient can be a limiting factor in an ecosystem.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!