Starting with the sand, Mara adds water to the jar one tablespoon at a time. Water soaks the sample from the bottom up. She counts the number of tablespoons of water it takes to bring the water level up to the top of the sample. She repeats this process for the gravel and soil samples.

3 jars: one with sand and water, one with gravel and water, one with soil and water

Mara adds 4 tablespoons of water to the sand, 7 tablespoons to the gravel, and 5 tablespoons to the soil.

Calculate the porosity of each of Mara's samples using this formula, and record the results in the chart.

% porosity = (amount of water added to sample ÷ total sample volume) × 100

“Total sample volume” is the amount of soil, sand, or gravel. A half cup is equal to 8 tablespoons.

Answer: external fertilization,  develop inside the female's body

Explanation:

Develop inside females body

Answer:

Compare and contrast the biotic and abiotic factors found in the South African plain and marine ecosystems.

Explanation:

Answer:

The biotic factors include all the living organisms in the ecosystem, while the abiotic factors include the non-living factors. In a marine ecosystem, some of the biotic factors are algae, fungi, microorganisms (such as bacteria), plants, animals, and corals. Biotic factors include all the living components present in an ecosystem

Abiotic factors refer to all the non-living, i.e. physical conditions and chemical factors that influence an ecosystem. Examples. Examples of biotic resources include all flora and fauna. Examples of abiotic factors include sunlight, water, air, humidity, pH, temperature

Explanation:

Answer:

1(This would become herd instinct

2(The musk oxen protect their pack when they have a distinctive defensive behavior:

Explanation:

I would say cooperative behavior because the most basic herd instinct here would be to flee from the danger. Cooperative behavior is two or more individuals working towards a common goal. There is also mutual benefit. The common goal is keeping the offspring safe and the mutual benefit is the young survives and the genes of the adult musk ox are passed on to future generations.

Answer: Energy from the sun goes into grass, plants, and crops. Animals eat the grass and crops- The animals go to a butcher or slaughter house for meat and cheese and dairy is made from cows for our meals. Energy from the sun goes into wheat and grains, also fruit and veggies.

Explanation:

The sun transfers energy to all life one earth and for example cheese comes from cows and cows eat plants and plants use the suns energy to grow

The correct answer would be “All of the Above”

All because they felt some form of hunger or thirst that told them to go eat/drink

Answer:

I would say A, C, and D

Explanation:

Im not totally sure so please wait till someone else answers too to double check.

Have a good day/night!!!

the answer is A C and D

answer 1:

Environmental Pollution occurs in different forms; air, water, soil, radioactive, noise, heat/ thermal, and light

Air Pollution

Water Pollution

Soil pollution

Noise pollution

Radioactive pollution

Light pollution

Humans are the main cause of water pollution, which is triggered in many ways: by the dumping of industrial waste; due to temperature rise, that cause the alteration of water by reducing the oxygen in its composition; Or due to deforestation, which causes sediments and bacteria to appear under the soil

Most of this air pollution we cause results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles. Carbon dioxide (CO2) is a good indicator of how much fossil fuel is burned and how much of other pollutants are emitted as a result.

Effects:

Nutrient pollution can cause toxic algal blooms in drinking water sources that create toxins that kill fish and other aquatic animals. Direct exposure to this toxic alga causes serious health problems in humans including neurological effects, respiratory problems, stomach and liver illness, and rashes.

answer 2:

The Industrial Revolution brought rapid urbanization or the movement of people to cities. Changes in farming, soaring population growth, and an ever-increasing demand for workers led masses of people to migrate from farms to cities. Almost overnight, small towns around coal or iron mines mushroomed into cities.

anwer 3:

advantages are

1_A Fuel Supply That Never Runs Out

2_Zero Carbon Emissions

3_Cleaner Air and Water

4_A Cheaper Form of Electricity

5_Renewable Energy Creates New Jobs

disadvantages are

1_Higher Capital Costs

2_Electricity Production Can Be Unreliable

3_Energy Storage Is a Challenge

4_It’s Impacted by Environmental Conditions

5_Renewables Still Have a Carbon Footprint

anwer 4:

Hazardous waste can be treated by chemical, thermal, biological, and physical methods. Chemical methods include ion exchange, precipitation, oxidation and reduction, and neutralization. Among thermal methods is high-temperature incineration, which not only can detoxify certain organic wastes but also can destroy them.

answer 5:

You could do this by:

1_Try to stay away from disposable goods. In particular, paper plates, cups, bottles, and plastic utensils.

2_Buy durable and reusable goods. ...

3_Pack your lunch in a reusable box rather than foil or cling film.

4_Buying products with less packaging. ...

5_Buying products in bulk.

I WISH THIS WILL BE HELPFUL, GOOD LUCK :)

1) Air pollution

Air pollution is a result of industrial and certain domestic activity. An ever increasing use of fossil fuels in power plants, industries, transportation, mining, construction of buildings, stone quarries has led to air pollution.

Main causes of air pollution

Particulate pollutants

Particulate matter suspended in air are dust and soot released from the industrial chimneys. Their size ranges from 0.001 to 500 µm in diameter. Particles less than 10µm float and move freely with the air current. Particles which are more than 10µm in diameter settle down. Particles less than 0.02 µm form persisent aerosols. Major source of SPM (suspended particulate matter) are vehicles, power plants, construction activities, oil refinery, railway yard, market place, industries, etc.

Water pollution

Water pollution is one of the most serious environmental problems. Water pollution is caused by a variety of human activities such as industrial, agricultural and domestic. Agricultural run-off laden with excess fertilizers and pesticides, industrial effluents with toxic substances and sewage water with human and animal wastes pollute our water thoroughly. Natural sources of pollution of water are soil erosion, leaching of minerals from rocks and decaying of organic matter. Rivers, lakes, seas, oceans, estuaries and ground water sources may be polluted by point or non-point sources.

Main causes of water pollution

Pesticides like DDT and others used in agriculture may contaminate water bodies. Aquatic organisms take up pesticides from water get into the food chain (aquatic in this case) and move up the food chain. At higher trophic level they get concentrated and may reach the upper end of the food chain.



2) The Industrial Revolution brought rapid urbanization or the movement of people to cities. Changes in farming, soaring population growth, and an ever-increasing demand for workers led masses of people to migrate from farms to cities. Almost overnight, small towns around coal or iron mines mushroomed into cities..

3) Benefits of Renewable Energy

Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution. Diversifying energy supply and reducing dependence on imported fuels. Creating economic development and jobs in manufacturing, installation, and more.

Disadvantages of Renewable Energy
Renewable Energy Is Not Available Round the Clock. ...
The Efficiency of Renewable Technologies Is Low. ...
The Initial Cost of Renewable Energy Is High.

4) Hazardous waste can be treated by chemical, thermal, biological, and physical methods. Chemical methods include ion exchange, precipitation, oxidation and reduction, and neutralization.

5) recycling = build an eco brick
reusing = reuse plastic bags
reduce. = close the water while brushing your teeth.

B. Fossil C is younger than D, but older than B

B is correct because c is higher than d and lower than fossil b

I think fox deer and rabbit bc they will have less mountain lions eating them

If mountain lions were to disappear from a food web, their prey populations could potentially increase, which could then lead to changes in the populations of the prey's food sources.

For example, if mountain lions primarily preyed on deer, a decrease in the mountain lion population could lead to an increase in deer populations, which could then result in overgrazing of vegetation in the area. This could then impact other species that rely on that vegetation, such as small mammals and birds.

Overall, the loss of a key species like the mountain lion can have significant impacts on the food web and ecosystem as a whole. It is important to understand and mitigate these impacts in order to promote the long-term health and sustainability of the ecosystem.

Learn more about food web at :

https://brainly.com/question/18816028

#SPJ7

Answer:

It is called population

Explanation:

Hope this helped and I got this right on my test, hope you get it right as well

Population

Hope u do well at your exams

Answer:

Relocate wetlands that would be displaced by the construction of the dam.

Explanation:

Increase the flow rate of the water so that there is an increase of sediment downstream.

Increasing the flow rate of water so the sediment downstream increases

Answer:

make me brainliest pls hope it helps :)

Explanation:

Electricity 24hrs.

Initial high cost

High loss when natural disasters occur

24 hrs - Water supply (rotation in the system)

No special selling market

Virus or Bacteria disturb to all plants when enter-

High computerization

Different fertilizers (Mineral fertilizers only

So many problems or negative point in Vertical farming but farmers takes benefit- its positive point)

Answer:

You are learning it vertically, but you may not understand it in person. I hope this helps! Please don't delete my answer, I am only trying to help. =(

Answer: C. Two recessive alleles

Explanation: i took the test

Two recessive factors (alleles) will not result in the expression of the dominant trait. So, the correct option is C.

What is Dominant trait?

Dominant refers to the inheritance of qualities that are often carried vertically from parent to kid, when both the parent and the child are impacted by the trait or disorder linked to that gene.

One copy of an allele, which might come from just one parent, is called a dominant allele and results in a dominant phenotype in individuals. Having two copies of a recessive allele, one from each parent, is necessary for a recessive phenotype to develop.

A dominant trait is indeed an inherent characteristic that manifests in a child if it is passed down from one parent to another through a dominant allele. Traits, commonly referred to as phenotypes, can include characteristics like eye colour, hair colour, immunity or susceptibility to specific diseases, as well as physical characteristics like freckles and dimples on the face.

Therefore, the correct option is C.

Learn more about Dominant trait, here:

https://brainly.com/question/911860

#SPJ3

Your question is incomplete, most probably the complete question is:

Which of the following will NOT result in the expression of the dominant trait?

Two dominant factors (alleles) One dominant and one recessive factor (allele) Two recessive factors (alleles) All of these result in the expression of the dominant trait

A C B I think is the answer

Explanation: animals try to fly walk or slither to a better climate and most of the attacks on humans have been to protect there offspring like cats if u pick up there kitten the mom cat will move the whole litter far from that spot and animals get hungry and it’s easy to eat if u live by it

A B D seems like the best choice