PLEASE HELP


i have no more than a month left of school and im not trying to procrastinate this even more. you would be saving a life smh

Answer:

Blood is prevented from backflow by valves in veins.

Explanation:

3.1 Calcium sulfate aka gypsum often used for construction

3.2 carbon monoxide dangerous part of exhaust

3.3 ammonium carbonate used in baking powders

3.4 silicon dioxide aka silica for making glass

3.5 Ferric oxide used in paints and coatings

3.6 potassium bromide which was used in veterinary medicine for the treatment of epilepsy

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Answer:

Adaptations of the alveoli:

Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through. Extensive blood supply - ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.

Answer:

the bottom

Explanation:

the bottom because it lets loose all the liquids and gases

Answer:

The radiation destroys food-borne bacteria. Radiation is measured in units called rads. The FDA allows exposure of up to 100,000 rads for already approved foods. At this level, gamma rays penetrate the food and kill bacteria and other infectious organisms by preventing the organisms from dividing and growing

Explanation:

Answer:    B

Explanation:

B cells are A type of white blood cell that makes antibodies. B cells are part of the immune system and develop from stem cells in the bone marrow they are also called B lymphocytes

Answer:

Gas exchange allows the body to replenish the oxygen and eliminate the carbon dioxide.

Answer:

c. a table remains motionless in a classroom

Explanation:

Answer:

1.) Sun, Sea water plant, bottom feeder fish, shark,

Explanation:

I have done those questions before and I just gave a basic answer but Sun is always at the top because it gives energy for plants which is normally second like for example: Sun, Grass, Grass hopper, Snake, Bird, Spider (that eats birds or something)

Mitigation strategies include retrofitting buildings to make them more energy efficient; adopting renewable energy sources like solar, wind and small hydro; helping cities develop more sustainable transport such as bus rapid transit, electric vehicles, and biofuels; and promoting more sustainable uses of land and forests. 

Answer:

Uplift is a tectonic process that forces rock up from beneath earth's surface

Uplift is a tectonic process that forces rock up from beneath earth's surface.

The process of plate tectonics may be driven by convection in Earth's mantle, the pull of heavy old pieces of crust into the mantle, or some combination of both.

Uplift, in geology, vertical elevation of the Earth's surface in response to natural causes. Broad, relatively slow and gentle uplift is termed warping, or epeirogeny, in contrast to the more concentrated and severe orogeny, the uplift associated with earthquakes and mountain building.

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Answer:

1. The sock is attached to the shirt after tumbling in the dryer.

2. The sock and the shirt were not attached because there wasn't any certain friction before being tumbled in the dryer. After tumbling in the dryer, the

3. There wouldn't be any more static energy, so when you pull the sock and shirt apart from each other, there would be any friction/ static energy connecting them, so if you put them together again, they would not stick.

4. sock decreases because there is no more static energy connecting the 2 cloths.

Explanation:

Good luck with the exam!

The answer is option B: hh

homo means "two of", and a lowercase letter is indicative of a recessive allele.

Answer:

I believe it's the 3rd one (C)

Answer:

Testable

Explanation:

Hypothesis is a tentative idea that may prove to be the answer for problem so it may be testable

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

Answer:

testable

Explanation:

Answer:

BB

Explanation:

BB means two dominant alleles

Answer:

it is near the skins surface

Explanation:

and there based on morphology like so you feel warmth cold and freezing sweating all

Type of Receptor Location Sensation

Ruffini's corpuscles Dermis Touch, pressure, propioception

Nerve ending Hair follicle Touch

Cold receptor Dermis Cold

Warm receptor Dermis Warmth

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Answer:

proprioreceptors

Explanation:

Destructive interference formed when the two meeting waves are out of phase and in some cases, the two wavers maxima are 180 degrees out of phase. The height of waves is determined by the wind speed, how  the long wind blows, and crucially the fetch.

The longer the duration of wave, the larger will be  the wave heights. The longer the fetch, the large will be wave heights.

Some waves jump to cross over or meet with each other. When they do, the reaction between the waves is called interference.

If at a given location, both interfering waves are supersede in the same direction (both up or both down) then it is known as constructive interference.

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Answer:

0.78

Explanation:

By using the Hardy-Weinberg equation.

Answer:

Heterozygous is the answer

Answer: humans eat some the ocean life, and other fish don't have any food because of it.

Explanation:

Answer:

Eukaryotes

Explanation:

are organisms whose cells contain a nucleus and other membrane-bound organelles.

Explanation:

Provision of wild harvested food products such as fish, large and small animals, and maple syrup. Provision of medicinal plants and raw materials for pharmaceuticals. Enabling nature-based tourism and the hunting and fishing industry.

Why is it important to protect ecosystems?  What could happen to the biotic and abiotic factors if we don’t take care of them?  

It protects the resources and organisms that depend on one another in the ecosystem

What would be the impact on the organism and the biomes?                  

A rise in temperature in the tundra for the polar bears:

They would get overheated since they are prepared for the colder temps with their fur-also causes the ice to melt and alter its food supply

A decrease in rainfall for the flowers in the rainforest:  

They would likely die due to a lack of water

A decrease in temperature for jackrabbit in the desert:

They would get very cold since they are used to the extreme heat

An increase in temperature for the black bear in the temperate deciduous:

They would get very hot and be trouble due to their fur and dark coloring

Refer to picture:

Kavinsky

Organisms that have a higher metabolic rate due to large mass and hence require less energy

We know that metabolic rate at which individual species carry out the process of metabolism.

It should be know that larger organisms that have a higher metabolic rate due to large mass and hence require less energy since metabolism produces heat. This owed to the fact that large size implies greater metabolism. Therefore,  less massive species tend to require more energy to survive.

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Answer:

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Explanation: Why worker egg-laying occurs in honey bee colonies. Usually, colony behavior, egg-laying, and ovary development in worker honey bees are prevented by queen pheromones and open brood pheromones. However, in the absence of these regulating pheromones, workers may develop ovaries that will enable them to lay their own eggs.