Please help a girl out !

Hot air balloons float because the air within the balloon is heated by a burner, making it less dense than the air around it, allowing the weight to get lifted from below. Gas balloons may be filled with either helium or hydrogen and use sand as ballast.

Explanation:

Answer:

Viruses are microscopic biological agents that invade living hosts and infect their bodies by reproducing within their cell tissue. Viruses are tiny infectious agents that rely on living cells to multiply. They may use an animal, plant, or bacteria host to survive and reproduce

1. Something at rest or in motion in all constants will remain that way unless acted upon by a force.

2. F=ma

Explanation:

Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Force equals mass times acceleration; it states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

Answer:

Carnivores omnivores reproducers maybe..lol

Answer:

a fossil that is useful for dating and correlating the strata in which it is found.

Explanation:

Maybe D I hope it helps you

Answer:

D

Explanation:

As population grows all the above factors increase expect the biodiversity of animal and plant species.

On a basic level, it is obvious that population increase and per capita income growth are related. Per capita income is simply total income divided by the population.  Thus, option D is correct.

When attempting to forecast changes in population size, demographers frequently focus on four essential criteria.

The population's starting age profile (whether it is relatively young or old to begin with), migration, and fertility rates (death rates; life expectancy).

Depending on particular environmental factors, two different patterns of population expansion may manifest: In a perfect, limitless environment, an exponential growth pattern (J curve) manifests itself.

The development of a logistic growth pattern (S curve) occurs when external forces reduce the pace of growth.

Therefore, The gap between the growth rates of income and population is roughly equivalent to the growth rate of per capita income.

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Answer:

Several drugs can also be prescribed alone or in combination to terminate early pregnancy. This is called medical abortion, and uses the hormones prostaglandins and/or mifepristone (an antiprogesterone often called RU486), and/or methotrexate

Explanation:

Answer:

because it is round and it has the different types of organelles in a layer by layer format

Explanation:

Answer:

1.Animal cells have no chloroplasts.

2.They also don't have cell wall.

Answer:

Yes and you can use a Punnett square to predict the genotype of their offspring!

Answer:

Accordingly, when our Sun comes up short on hydrogen fuel, it will grow to end up a red monster, puff off its external layers, and after that settle down as a minimal white small star, at that point gradually chilling off for trillions of years.  All incredible, in the long run — in around 5 billion years — our sun will, as well. When its supply of hydrogen is depleted, the last, sensational phases of its life will unfurl, as our host star extends to wind up a red Goliath and afterward shreds its body to consolidate into a white smaller person  Explanation:

hope that helps.

The effect Colchicine might have on dividing cells is that the duplicated chromosomes might not be able to segregate into daughter nuclei.

Colchicine is an alkaloid that attaches to tubulin and prevents it from polymerization to microtubules. As we know that Microtubules are a component of the cytoskeleton of a cell that aids in molecular mobility inside the cell.

During cell division, chromatin condenses into chromosomes, which are then connected to microtubules. The chromosomes are separated into daughter cells by microtubules.

When these cells are treated with colchicine, tubulin polymerization to microtubules may not occur, and the chromosomes containing daughter nucleic might not be separated.

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a. absorbs mostly orange red and blue violet light

Answer:

They were created from the subduction of the western-moving Pacific plate under the Australia-India plate at the Tonga Trench. The Tongan Islands sit on the Australia-India plate just west of the Tonga Trench. These volcanoes are formed when materials in the descending Pacific plate heat and rise to the surface.

Explanation:

The new island in the Pacific Ocean near the Vava'u Islands forms as divergent plates allow magma to come to the surface at this location. The correct option is a.

Vava's island is a group of islands that contain one large island and 40 smaller islands. They are present in the Tonga region.

They were formed as a result of the subduction of the Australia-India plate beneath the western-moving Pacific plate at the Tonga Trench.

West of the Tonga Trench on the Australia-India plate is the Tongan Islands. When elements in the descending Pacific plate heat up and rise to the surface, volcanoes like this are created.

Therefore, the correct option is a. divergent plates allow magma to come to the surface at this location.

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Answer:

the yeast

Explanation:

Answer:

Sensory receptors respond to stimuli.

Explanation:

They can be classified by their location, the type of stimulus they detect or by their structural complexity.

Sensory receptors  are the receptors which respond to stimuli within the

body. The body have five major sensory organs which include the eyes,

nose, tongue, ear and skin.

These organs have receptors which is responsible in the transmission of

signal to the brain for action. The brain acts depending on the signal

received which is usually in the body's best interest.

This makes our sensory organs important and very delicate and as a result

should be adequately protected and taken are of.

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Answer:

Energy pyramid depicts flow of energy in the ecosystem: source of all energy in ecosystem is the SUN. Producers are only organisms in ecosystem who can trap the solar enrgy. So base of energy pyramid is always wide. A biomass pyramid shows the total dry mass of all living organisms at each trophic level.

Explanation:

Because the amount of the pollutant increases as it goes up the food chain, the biomagnification pyramid is inverted whereas the energy pyramid is consistently upright.

Biomagnification is the amassing of a chemical by an organism as a result of exposure to both food and water, resulting in a concentration that is higher than what would have been expected from equilibrium and higher than what would have occurred with only water exposure.

When dangerous chemicals like DDT that remain in the environment are indirectly absorbed by living things through food, this process is known as biomagnification.

When a higher-order organism consumes a lower-order organism that contains such compounds, the chemicals may accumulate in the higher-order organism.

The biomagnification pyramid is upside down because the amount of the pollutant increases as it moves up the food chain. The energy pyramid, however, is always upright.

Thus, this can be the comparison between the energy pyramid and biomagnification.

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Answer:

The fetus is connected by the umbilical cord to the placenta, the organ that develops and implants in the mother's uterus during pregnancy. Through the blood vessels in the umbilical cord, the fetus receives all the necessary nutrition, oxygen, and life support from the mother through the placenta.

Answer:

Mild temperatures

Explanation: The temperatures are usually around 86(degrees Fahrenheit) in the summer and 50(degrees Fahrenheit) in the winter

Answer:

smog

Explanation:

Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.

I know I'm late but I too am taking the Phenomenon #2 Assessment (Part 1)  and want to help any future readers : )

(I pretty much gave you guys the answer but the little facts might still help, so I didn't give the direct answer in the start)

Explanation:

Mitosis: A type of cell division that results in 2 identical daughter cells.

* Process responsible for us getting bigger

*Process that repairs damaged cells

*grows new skin for us when cut

(took this out of my teachers lesson/ CC)

While...

Cell differentiation is:

Same DNA, just different genes get expressed!

This is the reason we look different are we get older! (Not the reason we grow)

^ This above are the 2 people most likely think are the answers

Good luck : )

Extra:

Meiosis:

A type of cell division that reduces the number of chromosomes in half.

Ozone in the stratosphere is a toxic pollutant that can cause tightness or shortness of breath is a true statement.

One layer of the stratosphere, the second layer of the Earth's atmosphere, is the ozone layer. The layer of insulating gases that clings to our planet is known as the stratosphere.

A small layer of the Earth's atmosphere called the ozone layer absorbs nearly all of the sun's harmful UV energy. Areas of the ozone layer degradation are frequently referred to as "ozone holes." That is incorrect. Damage to the ozone layer is more akin to a very thin patch than a hole.

Therefore, Ozone in the stratosphere is a toxic pollutant that can cause tightness or shortness of breath is a true statement.

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Answer: it would be D

Explanation:

The situation that could not be an example of interspecific competition is two organisms competing for a mate. Thus, the correct option is B.

Interspecific competition may be defined as an instance of competition between individuals of different species.

The situation of two organisms competing for a mate illustrates an example of intraspecific competition. This is because the two individuals mate with a member of their own species in order to produce fertile offspring.

The individuals of different species do not undergo interspecific competition.

Therefore, the correct option for this question is B.

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Press “Open World”, select your Bedrock world as the source, then press “Convert” on the left. Press “Select Output World”, then choose the Java world you created. When ready, press “Convert” to begin the process.

I searched it and found this, let me know if it helps!

Answer:

The answer is C diploid Phase

Answer:

The answer is C.

Explanation:

Plants that we reconize today spend the majority of their life in the diploid phase.

During the sporophyte phase, a diploid plant body (one with two sets of chromosomes) develops and finally generates spores via the process of meiosis. Mitotic division of these spores results in the formation of gametophytes, which are gamete-producing organisms that are haploid (have a single pair of chromosomes).

Answer:

c. Metabolism

Explanation: is correct