Based on the data in the graph which environmental factor would have most likely lead to the change in the harbor seal population size from 1980-19907 1,5004 1975 1980 1985 1990 Year 1995 2000 Based on the data in the graph, which environmental factor would have most likely lead to the change in the harbor seat population size from 1980-1990
A. Increased availability of food
B. Decreased resistance to parasites
C. Increased competition with carnivores
D. Decreased number of primary producers

Answers

Answer 1

Increased availability of food environmental factors would have most likely led to the change in the harbor seat population size from 1980-1990. The correct option is B.

How is food availability correlated with population growth?

As the population grows, so does the demand for food, which usually necessitates the use of more arable land and water.

Plants are the primary source of food for people living in overcrowded countries because they cannot afford the 90% energy loss that occurs when plants are fed to animals. At the herbivore level, the same amount of grain can support ten times as many people as at the carnivore level.

Thus, the ideal selection is option B.

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Related Questions

jupiter has three moons for which there is evidence of a global, subsurface ocean of liquid water, with the strongest evidence favoring an ocean on blank.

Answers

Answer:

answer is Europa

Explanation:

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drag the air pollution impact on the left to the description on the right. terms may be used once, more than once, or not at all.
1. stratospheric ozone depletion
2. photochemical song
3. acid deposition
1) Concentrations are elevated by hot. sunny days:____
2) Increases exposure of organisms to ultraviolet light:_____
3) Caused by halocarbons. such as chlorofluorocarbons (CFCs):______
4) Forms from emissions of sulfur dioxide:______
5) Montreal Protocol aimed to reduce emissions that cause this:______
6) A reaction between pollutants and atmospheric compounds that creates over 100 different chemicals:_____
7) Leaches plant nutrients from soils: Most pronounced in cities prone to inversion events:_____

Answers

The air pollution impact can be matched to their description as :

Concentrations are elevated by hot sunny days: photochemical smog. Increases exposure of organisms to ultraviolet light stratospheric ozone depletion.Caused by halocarbons. such as chlorofluorocarbons (CFCs) stratospheric ozone depletion. Forms from emissions of sulfur dioxide acid deposition is acid deposition.5) Montreal Protocol aimed to reduce emissions that cause this stratospheric ozone depletion.A reaction between pollutants and atmospheric compounds that creates over 100 different chemicals photochemical smog. Leaches plant nutrients from soils: Most pronounced in cities prone to inversion events acid deposition

What is air pollution?

Air pollution can be decribed as the contamination of the indoor as well as the outdoor environment as a result of the chemical, physical as well as biological agent .

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gerard’s and lashley’s rat-maze studies led to an understanding that:

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Gerard’s and lashley’s rat-maze studies led to an understanding that

Memories don't reside in a "place"Memories aren't due to the brain's constant electrical activityMemory is housed in multiple synaptic connections, made more efficient by long-term potentiation (LTP)

What was the rat-maze studies ?

Therat-maze studies can be described as one where there was testing of the proficiency of successive generations of rats in completing a maze.

It should be noted that in Gerard’s and lashley’s rat-maze studies there are some of the information as well as fact that are been established suchg as the fact that Memories aren't due to the brain's constant electrical activity.

In conclusion, from the rat maize experiment it was established that Memory can be seen as onbe that housed multiple synaptic connections, and this help in the cognitive behaviour of the individuals and it made more efficient by long-term potentiation .

Therefore, all the given options are correct.

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missing options:

Memories don't reside in a "place"

Memories aren't due to the brain's constant electrical activity

Memory is housed in multiple synaptic connections, made more efficient by long-term potentiation (LTP)

All of the above

what might happen to a losing stream as the water passes from flowing over hard, impermeable rocks to flowing over more permeable rocks?

Answers

In a losing stream, if the water passes from flowing over hard and impermeable rocks to flowing over more permeable rocks, then, such steam will lose more water to the subsurface and might disappear.

What is the feature of losing stream?

In geography, a losing stream is also called a disappearing stream, influent stream or sinking river, which is a stream that loses water as it flows downstream.

The water from this channel infiltrates into the ground recharging the local groundwater because the water table is below the bottom of the stream channel. They are more common in arid areas due to the climate which results in huge amounts of water evaporating from the river generally towards the mouth.

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The two major sources of nitrate pollution in rivers are animal wastes and fertilizers. The Option C is correct.

What is Nitrate Pollution in Rivers?

In a river, a nitrate pollution are caused by a variety of sources, in which some are natural and some man-made. These nitrates are naturally found in rocks, soil, as well as living organisms such as algae and bacteria.

However, nitrogen are also added to the environment when fertilizers are used on lawns and farmland and these fertilizers contain nitrates which are then washed into streams by rainwater or melting snow.

Answers

As the annual temperature range at most latitudes in the southern hemisphere is much smaller than in the northern hemisphere, this is due to the fact that there is a greater percentage of ocean water surface in the Southern Hemisphere. The Option E is correct.

What is an annual temperature range?

In geography, an annual temperature range means the difference between the hottest and coldest months, by taking monthly mean of temperatures in each case.

It is most given as approximate of difference between the average of the January maximum and minimum temperatures and the corresponding average for July.

Missing options "E there is a greater percentage of ocean water surface in the Southern Hemisphere..

Answers

Emissions of pollutants into the air can result in changes to the climate. These pollutants, including greenhouse gases, are often referred to as climate forcers. Ozone in the atmosphere warms the climate.

A pollutant or novel entity is a substance or electricity introduced into the environment that has undesired results, or adversely affects the usefulness of a useful resource. those can be each certainly forming or anthropogenic in the foundation.

A pollutant is a substance this is found in concentrations which could damage organisms (humans, plants and animals) or exceed an environmental high-quality wellknown. The term is often used synonymously with contaminants.

Air pollution, Noise pollutants, Water pollution, and Soil pollution. other styles of pollutants are thermal pollutants, light pollutants, and radioactive pollution. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide. Secondary air pollution: pollutants that might be formed in the lower ecosystem through chemical reactions. the 2 examples are ozone and secondary organic aerosol (haze).

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School Agriculture Programme (SAP) was introduced mainly to promote dignity of labour among the students. Explain how SAP promotes dignity of labour among the students.

Answers

School Agriculture Programme aims to promotes dignity of labour among the students by making sure they know the value of labor.

What is the School Agriculture Programme?

This Programme have been identified as one of the means to sustain the central and autonomous schools, the agriculture ministry officials said. The task force of School Agriculture Programme including officials from education ministry plans to visit the schools to identify the necessary infrastructure for a quick start to the program in those schools.

This programme was initially formed to promote dignity of labour among students in the eighth plan and has now grown to make students ‘work, produce and consume. Some of the advantage of this programme is that the students learn farming, eat fresh vegetables, and the school earns its revenue.

The program requires all schools to have a minimum of 50m2 (metre square) of vegetable garden and rear livestoc, such as pigs, chicken and cattle or fish.

Answers

New variety arises through mutations. Natural selection merely modifies the amount of variety already existing in the population; it does not produce new features. The development of new adaptive characteristics results from the recurrent two-step interplay of these processes.

What are Mutations?

Generally, Any change in the DNA sequence of a cell. Mutations may be caused by mistakes during cell division, or they may be caused by exposure to DNA-damaging agents in the environment.

In conclusion, The origin of new variations may be traced back to mutations. Natural selection does not produce novel features; rather, it only modifies the amount of existing variation that is present in a population.

The development of unique adaptive characteristics is caused by the repetitive interplay of these processes, which takes place in two stages.

Answers

Using the formula the depth in meters for the following echo soundings are given as follows:

5,250 meters2,250 meters6750 meters1,500 meters.

How did we arrive at the following answers?

The formula is already given as:

Ocean Depth = 1/2 ( 1500meters x echo travel time)

Hence, for a:

Ocean Depth = 1/2 (1500 x 7) = 5,250 meters

For b:

Ocean Depth = 1/2 (1500 x 3) = 2,250 meters

For c:

Ocean Depth = 1/2 (1500 x 9) = 6750 meters

For d:

Ocean Depth = 1/2 (1500 x 2) = 1,500meters

It is to be noted that

The average depth of the ocean is about 3,688 meters (12,100 feet). The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S.

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when pressure is applied to a pile of sediments, the grains will pack together more tightly, taking up less volume. water, however, simply stores the pressure. why?

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When pressure is applied to a pile of sediments, the grains will pack together more tightly, taking up less volume. water, however, simply stores the pressure this is because water is nearly incompressible.

What is water?

Generally, Water is almost incapable of being compressed, particularly when kept under typical circumstances.

If you place a straw inside of a sandwich bag and then fill the bag with water, when you squeeze the bag, the water won't be compressed as it would if you only squeezed the bag. Instead, it will fly out of the straw.

If you apply pressure to a pile of sediments, the grains will pack together more tightly, resulting in a reduction in the volume that they occupy. Water, on the other hand, just stores the pressure; this is due to the fact that water is almost impossible to compress.

Answers

SIERRA CLUB stop construction of nuclear plants

AARP supported age discrimination

AMA members of the organization lobby congress to protect social security.

What are the listed organizations known for?

1. The Sierra club: This organization works to stop the construction of nuclear power plants until the government passes more safety and environmental regulations.

2. AARP: This group supported the Age Discrimination in Employment Act (ADEA) which protects older Americans from being discriminated against in the workplace.

3. AMA: Members of this organization lobby congress to protect social security, Medicare, and other retirement program.

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This is the only large-scale bronze sculpture of an emperor on his horse to survive from antiquity.
Equestrian Sculpture of Marcus Aurelius, c. 173-76 C.E. (Capitoline Museums, Rome)Choose 1 answer:

Select one:
True
False

Answers

Equestrian Sculpture of Marcus Aurelius is the only large-scale bronze sculpture of an emperor on his horse to survive from antiquity.

Thus, the correct option is True.

What was Equestrian Sculpture?

It's an illustration meant to show the Emperor as supremely victorious. According to medieval chronicles, it is assumed that the sculpture once included a vanquished foe.

According to the tales, there was once a figure of a tied barbarian chieftain hiding under the horse's front right leg.

Marcus Aurelius Statue on Horseback, 1757. Hubert Robert, a painter and draftsman who studied for eleven years at the French Academy in Rome (1754-65), is renowned for his picturesque capriccios, or views of the city that combine actual and imagined antique monuments.

From the most delicate and compassionate to the most violent and exuberant, it has been used to represent a wide range of human emotions and moods.

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the red line marks the line, the boundary between hard bedrock in the mountains and soft sediments in the coastal plains. stream gradient changes here, and it is marked by a series of

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The red line marks the fall line, the boundary between hard bedrock in the mountains and soft sediments in the coastal plains. stream gradient changes here, and it is marked by a series of waterfalls.

What does a fall line mean in Geography?

An area where the upland region and a coastal plain merge are known as a fall line (or fall zone) and it is usually noticeable where rivers pass it, creating rapids or waterfalls.

This coastal plain is made up of softer sedimentary rock, while the uplands are composed of comparatively hard crystalline basement rock. As river clears away the uphill dense debris, a fall line will frequently move downstream, exposing bedrock shoals and, thereby creating "c"-shaped waterfalls.

A quick change in the elevation of the water and resulting energy release make the fall line a good location for water mills, grist mills, and sawmills. By seeking head of navigation with a ready supply of water power, the people have long made settlements where rivers cross a fall line.

Answers

The fraction of nutrients responsible for the gulf of Mexico hypoxic zone that are anthropogenic is: 70.

What is the gulf of Mexico?

A marginal sea of the Atlantic Ocean, the Gulf of Mexico (GOM) is bounded to the north and east by five US states, to the west and south by five Mexican states, and to the southeast by Cuba.

Florida, Alabama, Mississippi, Louisiana, and Texas are among the US states that border the eastern, northern, and western beaches of the Gulf of Mexico. With a length of 1,680 miles (2,700 km), the US part of the Gulf Coast receives water from 33 major rivers that drain 31 states.

The Gulf of Mexico is well known across the world as a large, productive body of water with enormous ecological, economic, and social importance. The expanse and diversity of the Gulf frequently obscure the basic connections between the living and the non-living.

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large estuaries are more common on a(n) ________ coastline.

Answers

The complete statement is "large estuaries are more common on a(n) Submergent coastline."

What is an estuary?

Generally, An estuary is defined as a coastal body of brackish water that is only partly contained, has a free connection to the open ocean, and receives water from one or more rivers or streams that flow into it.

A good example of an ecotone is the transition zone that estuaries provide between the freshwater ecosystems of rivers and the saltwater conditions of the ocean.

Answers

An uncemented sandstone has the highest permeability. (Option C)

What is a sandstone ?

Sand-sized silicate granules make up the majority of the clastic sedimentary rock known as sandstone. About 20–25% of all sedimentary rocks are sandstones. Because quartz and feldspar are the minerals that resist weathering the most at the Earth's surface, they make up the majority of sandstone. Because they are the minerals that are most resistant to weathering processes at the Earth's surface, quartz or feldspar (both silicates) make up the majority of sandstone.

In conclusion, sandstones are created by the cementing of sand grains. Sandstones typically have a rough, grainy texture similar to sandpaper.

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the formation of solid land, protocontinents called cratons, began at the end of

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Answer:

The formation of solid land, protocontinents called cratons, began at the end of The Hadean.

Explanation:

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We can see here that the two major sources of nitrate pollution in rivers are:

C) animal wastes and fertilizers

D) fertilizer runoff and the burning of fossil fuels by cars.

What is pollution?

Pollution is actually known to be the process by which harmful and toxic substances are introduced into the environment. This results to making the environment unsafe and harmful for plant and animals. Pollution is very dangerous in the environment as it can harm humans too.

We see here that the use of fertilizers can actually increase the availability of nitrate in the environment. Thus, the two selected options are correct.

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Why do you think our farmers have adopted a mixed farming system?

Answers

Answer:

Mixed farming systems provide farmers with an opportunity to diversify risk from single crop production, to use labour more efficiently, to have a source of cash for purchasing farm inputs and to add value to crops or crop by-products.

Explanation:

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