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Object A has a mass of 12 g and a volume of 8 cm3. Object B has a mass of 20 g and a volume of 8 cm3. Which object has a greater density and by how much?

Object A, by 1 gram per cubic centimeter
Object A, by 8 grams per cubic centimeter
Object B, by 1 gram per cubic centimeter
Object B, by 8 grams per cubic centimeter

Clouds often form around 3pm and 6am because of specific atmospheric conditions. In the afternoon, the Sun's heat causes warm moist air to rise and cool, forming cumulus clouds. Around dawn, surface temperatures drop, creating a favorable environment for the humidity to condense into clouds.

The phenomena of clouds often forming around 3pm or 6am primarily relate to atmospheric conditions particularly those involving temperature and convection processes.

In the afternoon, around 3pm, the sun has been heating the Earth's surface for most of the day. This heating process causes the air near the surface to warm up and rise, a process called convection. As this warm, moist air rises, it cools and can condense to form cumulus clouds, often appearing around the middle of the afternoon.

Similarly, around 6am, atmospheric conditions become favorable for cloud formation. The temperature near the Earth's surface becomes cooler than the air above. This causes the humidity to rise and condenses into clouds facilitated by the cooler, moist environment, which is why you often observe clouds in the early morning.

Another factor that contributes to these timings is the Earth's atmosphere's refractive properties, which can bend light around the planet. This bending can lead to the phenomenon of twilight illumination before sunrise and after sunset. Despite the sun not being in the horizon, its sunlight can still reach and heat the Earth's surface, possibly impacting cloud formation times.

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Answer:

Correct. Wetlands create a nursery for many types of fish, and also improve water quality by removing nitrogen phosphorus and pesticides from agricultural runoff.

Sponges have specialized cells that resemble the parts of the same animal unlike a group of individual cells composed of individual organisms. Protists are unicellular, and live in isolation even when there's a bunch of them stacked close to each other. They are unspecialized cells.

Sponges have a body skeleton that is not composed of cells. They perform sexual reproduction by forming both the male and the female gametes. All these features are absent in the protists.

Answer:

1) CME describes the unusually large release of plasma from the sun's corona

2) X and Y are both within the solar system.

Explanation:

1) The coronoid mass ejection (CME) is a wave of radiation and solar wind released from the sun during the maximum solar activity.

This is a very dangerous wave because it might cause huge damages to the electrical system and the communication system on earth.

The coronoid mass ejection throw important quantities of material and electromagnetic radiation, beyond the solar surface.

The ejected material is plasma from the sun´s corona composed principally of electrons and protons, and might also have small quantities of heavier particles such as helium, oxygen and even iron.  

2) X and Y are both within the solar system.

The farthest distance from the sun belongs to Pluton, which is located at 39.53 AU away from the sun. X and Y are located at 30.2 AU, which means that they are within the solar system.

Considering that 1 AU = 1,58125e-5 light-years, then Z might be located outside the solar system.

The correct answer is option B

In a positive feedback the presence of a chemical or product intensifies or increases the resulting action/product. For example , during child birth the release of oxytocin intensifies the process of contraction. Another example is of blood platelets which when increase in number also enhances the rate of  the blood clothing. While in a negative feedback the presence of a chemical or product reduces or discourages the resulting action/product.

Respiration (exhaling) by animals and by burning of fossils fuels.

Carbon is an important element as it readily forms bond with other atoms such as oxygen and hydrogen. This is important in the formation of organic molecules.

Carbon is an important constituent of many biomolecules including DNA and RNA.

Carbon is a prime greenhouse gas which traps the sun’s energy coming on the earth. Carbon is present in the form of CO2 in the atmosphere of the earth.

Carbon is a fossil fuel. It is found in the dead remains of plants and animals of the pre-historic era. The age of fossil fuels is determined by carbon dating technique.

Carbon is important as plants take up carbon dioxide for photosynthesis. Plants also undergo carbon fixation for producing carbon rich compounds.

Therefore, carbon is important to sustain life on earth.

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Long toes can be inherited from parents to offspring in organisms, considers a heritable trait, hence option A is correct.

A heritable trait is a kind of offspring trait that matches the parents' related trait more than it fits the same trait in a random individual in the population.

It is a measurement of how well differences in people's genes describe differences in their traits. Sense of humor is not a heritable trait, it is a psychological condition that is different in parents and offspring.

A gene is key to the transmission of traits from parents to offspring, it is a DNA sequence that is expressed in the form of protein.

Therefore, the long toe is a character which can be inherited from parents, hence option A is correct.

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The answer is B. Invasive species are successful in novel environments due to lack of a natural predator or competition. Therefore if the non-native share a niche with other fish in the lake ecosysem, there will definitely be competition for resources.  This could lead to competitive exclusion of one species or resource partitioning between the species. Consequently, the non-native fish species will not invade the new environment unchecked.

Answer: the fish shares a niche with other species, trust me

Explanation:

The wind blows particles of molds and plant pollen; forest fires, soil erosion, and dust storms add particles of smoke and dust; erupting volcanoes spew out clouds of dust, ash, and poisonous gases.

The processes known as pollination which is responsible for the transfer of pollen from the male reproductive structures to the female reproductive structures

Answer:

pollination

Explanation:

big brain

Answer:

It's B

Explanation:

Fossil fuels formed from the remains of living things or organic matter. When tremendous pressure and heat are applied to organic matter for long periods of time, the organic matter turns into fossil fuels causes the pressure that turns organic matter into fossil fuels.

Final answer:

The correct option is (b) gases released during combustion can form acid rain. Burning fossil fuels releases gases that can lead to the formation of acid rain, representing one of the disadvantages of using fossil fuels as an energy resource.

Explanation:

One of the disadvantages of using fossil fuels as an energy resource is that gases released during combustion can form acid rain. Fossil fuels, which include coal, oil, and natural gas, are nonrenewable sources of energy that were formed from the remains of plants and animals that lived millions of years ago. When these fuels are burned, they release carbon dioxide and other pollutants into the atmosphere. These emissions contribute to environmental issues such as global warming, smog, and acid rain, which are caused by the release of sulfur dioxide and nitrogen oxides during the combustion process. Accidents during fossil fuel extraction and transportation can also lead to devastating environmental consequences, such as oil spills.

The statement is true about the cell theory is It is based on experimentation. So, option C is correct.

The cell theory suggest that all cells come from other cell. The other cell refers to the pre-existing cell.

Robert Hooke was the one who discovered many fact about cells. He studied the cells scientifically which we call cell biology.

So, option C is correct.

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Answer:

A synthetic gene is created.

Explanation:

I just took the test and this was the correct answer.

Answer:

C) the evolution of cells with nuclei and organelles

Explanation:

Sponges are eukaryotes and have well define membrane bound nucleus and organelles in their cells. They lack tissues and hence, do not need organization of cells into groups. Evolution of sponges would require origin of eukaryotic cells from the ancestral cells. Being animals, they lack cell wall around their cells.

The evolution of cells with nuclei and organelles was a fundamental development that facilitated the evolution of basic multicellular organisms such as sponges.

In order for sponges or Porifera, which are the simplest multicellular animals on Earth, to have evolved, there must have been an important foundational development. That development was C) the evolution of cells with nuclei and organelles. This cellular evolution marked a significant transition from unicellular organisms to multicellular organisms. Basic cells with no nuclei or organelles, namely prokaryotic cells, evolved into more complex cells with nuclei and organelles, termed eukaryotic cells. Fundamental multicellular life forms such as sponges could have thereafter originated based on the additional complexity offered by these eukaryotic cells.

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Answer: The correct answer is D. Heating by the sun.

Comets are balls composed of dust and ice orbiting around the Sun in elliptical orbits. The orbit of the comet takes it near and far away from the sun. As the comets get closer to the Sun, the heat of the sun vaporizes the materials on the surface of the comet which forms a tail pointing away from the sun.

A comet tail is visible from Earth when they are illuminated by the Sun on approaching the inner Solar System. The solar radiations vaporize the volatile materials of the comet which streams out from the nucleus and carries dust away with it. The pressure due to the Sun’s radiation and solar winds leads to the formation of a tail pointing away from the Sun.

The secondary structure begins the folding up process where as in the tertiary structure, the protein is folded into its accurate 3D structure, associating to the purpose. This is tied together by a series of non-covalent communications between side groups, including ionic communications, disulphide bonds, hydrophobic interactions, Van der Waals energies and hydrogen bonds.

Answer:

The correct answer is option d, that is, the star's absolute magnitude.

Explanation:

The Hertzsprung-Russell diagram or the H-R diagram also called the color-magnitude diagram. It demonstrates the association of the color of the stars (temperature) with the luminosity of the star or absolute magnitude. The stars apparent magnitude at a distance of ten Parsec from Earth is known as the absolute magnitude of the star.

The answer is Plantae kingdom. The mentioned characteristics best describe the Kingdom. The next probable group would have been the Protoctista Kingdom but some move by use of flagella and cilia (hence not immovable). Protoctista Kingdom has heterotrophs too. The other known Kingdoms are Animalia, Fungi, and Prokaryotae.

Food substances contain chemical energy which is found between the molecular bonds of the food substance. When food is cooked the chemical energy is converted to another form of chemical energy by the separation of the different classes of food stored in the food as chemical energy.

The food ( carbohydrates ) when digested will be converted to glucose or fat molecules, which is required by the human body for proper functioning/energy.

Hence we can conclude that the type of energy associated with food is ; chemical energy, the energy is stored as  Molecular bonds and the chemical energy in the food when cooked is converted to nutrients needed by the body ( e.g.  glucose )

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