Ok so I got a bad grade on my science quiz (so did everyone else) she changed the definitions she gave us originally the day of the test. So now I can redo them but I have to know the new definitions It’ll be very helpful if you can give me at least some of the answers. Thank you.

Answer: D). Most rocks are a mixture of minerals

Rocks are the natural substances these are the aggregate of one or more number of minerals. These minerals are responsible for chemical and physical nature of rocks. These are responsible for type of particles, texture of particles and overall rock structure. Example of rock having mineral aggregate is granite which is a combination of minerals like quartz, biotite and feldspar.

Rocks are a mixture of minerals (D).

Further Explanation:

Minerals are made up of large element, most elements are simple substances that can not breakdown into any other substance.  

Most common example of minerals are Na,Si,Cl etc.

For example, SiO4  mineral contains large amount of element  

Rocks are aggregates of minerals, rocks are major of three types:

Igneous rocks are created when lava cools down and solidify in rock.

The metamorphic rocks are made by the subjection of igneous rocks and sedimentary rocks under high pressure and temperature.

The sedimentary rocks are created by continuous deposition of minerals, earlier rocks, and animal.

Example of igneous rocks are granite and made up of a mixture of element example SiO2 and Al2O3.  

Examples of sedimentary rocks are breccias and siltstone and of metamorphic rocks are marbles.

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Answer Details:

Grade: High School  

Subject: Biology

Chapter:Ecology

Key Words:  

Soil, rock, mineral, mixture, granite, breccias, siltstone, sediments, metamorphic, igneous rocks, sedimentary rocks, silicon, deposition,earth sciences, substances, breakdown, pressure, temperature, element.

The correct answer is the flow of water through the body of a sponge.  

The sponges are multi-cellular species in which the organ systems like the nervous system, digestive system, circulatory system, and others are absent. They possess a specific feeding system in which they maintain the continuous flow of water through their bodies. This water movement helps them to attain oxygen and food and remove waste.  

The movement of water all through the body of the sponge is unidirectional in nature, it gets inside the body of sponge via ostia, and exit through the osculum. With the external pumping of water, the cells found in the walls filter out the food present in the water.  

Final answer:

During metaphase, the chromosomes are lined up along the equator of the cell at the metaphase plate, which is a plane midway between the poles of the cell. The correct answer is option C, "lined up along the equator of the cell."

Explanation:

During metaphase, the location of the chromosomes is crucial for proper cell division. The correct description of their location at this stage is that they are lined up along the equator of the cell. Practically, this means they align in a plane known as the metaphase plate, which is situated midway between the two poles of the cell. Each chromosome is connected via its centromere to the microtubules that make up the spindle fibers, originating from the centrioles at each pole.

In this phase, sister chromatids remain attached to one another and the chromosomes are highly condensed, becoming maximally visible under a microscope. Visual identification is possible by looking for chromosomes that appear in a straight line across the center of the cell, signifying that the cell is in metaphase and not another phase of cell division.

Answer:

The correct answer is hominids.

Explanation:

The group, which comprises modern humans and their direct ancestors are termed as Hominidae. It is also known as great apes or Hominids. Basically, the term Hominidae is considered for only the humans and their closest relatives. However, some of the people still continue to use this term in its limited sense, rather than in the modern sense.

Answer:

Answer: the answer is A Explanation:

Answer: Solvent

Explanation:

A solution is made of two substances one is solute and the other one is solvent. The substance that get dissolved is called as solute and the liquid in which the solute is dissolved is known as solvent.

The solute and the solvent combine together to form solution. It is a homogeneous mixture in which the solute and the solvent cannot be distinguished.

Hence the correct answer is solvent.

Answer: They divide the atomic mass by two

Explanation: I'm too tired to explain Lol

Alkaline and zinc-carbon batteries can be safely disposed of in your domestic trash in the majority of areas. Ship used alkaline and zinc carbon batteries to battery recyclers. Thus, option D is correct.

When batteries are thrown away in California, they are regarded as hazardous waste. This includes single-use and rechargeable AAA, AA, C, D, button cell, 9-volt, and all other batteries.

Rechargeable batteries are dangerous for the environment and human health because they contain hazardous heavy metals like lead, nickel, cadmium, and mercury.

It is advisable to recycle or properly dispose of rechargeable batteries.

Therefore, take used batteries to a recycling plant, so they can be used for some other purpose, is the least acceptable.

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Answer:

Option C, image 3

Explanation:

Hydrogen bonds are weak electrostatic bond that exist between hydrogen and an electronegative atom.

In order to have hydrogen bonding, the hydrogen must be bonded to an electronegative atom.

Generally molecules having hydrogen bonded to electrogegative atom, N, O and F show hydrogen bonding.

Hydrogen bonds may exist within a molecule or between two separate molecules.

Difference in electronegativity of hydrogen and electronegative atom develops dipole which responsible for electrostatic attraction.

In image 1 and 2, hydrogen bonding is shown between two oxygen atoms, which is not correct.

In image 4, hydogen bonding is shown between two hydrogen atoms, which is also not correct.

Hence, the correct option is image 3

Answer:

Government aims to modify the policy and design rules accordingly and also aims to incentive's any study in this area by technocrats . In this way  United Kingdom is planning to use driverless cars beginning in 2015

Explanation:

As per the government strategy, it is believed that UK will first start using its driver less technology in mainly two segments -

a) Luxury riding services

b) Commercial vehicle  such as haulage, cargo vehicles etc.

After this, the government has planned to introduce this for the consumer segment where an individual can own  own (semi-) autonomous vehicles

Government has also planned to introduce a change in policy and design norms for the betterment of society. It has also attempted to partner with technological companies by providing incentives for citing their research and inventions in this era.

Answer:

C on edge

Explanation:

Answer:

Explanation:

In general, ergonomics involves knowledge and technologies that allow a comfortable and productive adaptation between man and the place where he works. The idea is to “shape” working conditions for greater comfort, efficiency and safety.

Although there are countless ways to improve our ergonomics, we can name four very useful ways to do this. These forms are:

...parent to offspring

Answer:

C (Third one)

Explanation:

Invertebrates are animals that do not have a backbone or vertebral column, while non-vertebrate chordates are animals that possess a notochord at some stage of their development, but lack a vertebral column.

Chordates are a group of animals that are characterized by the presence of a notochord, a dorsal nerve cord, pharyngeal slits, at some point in their life cycle.

The notochord is a flexible rod-like structure that provides support to the body and serves as an attachment point for muscles.

The main characteristics that distinguish invertebrates from non-vertebrate chordates are:

Backbone: Invertebrates lack a backbone, while non-vertebrate chordates possess a notochord.

Complexity: Invertebrates are generally simpler in body plan and organization than non-vertebrate chordates.

Size: Invertebrates can range in size from microscopic to very large, while non-vertebrate chordates are typically small.

Diversity: Invertebrates are a very diverse group of animals, comprising the vast majority of animal species on Earth, while non-vertebrate chordates are relatively rare and include only a few species.

Symmetry: Invertebrates can exhibit a wide range of body symmetry, while non-vertebrate chordates typically exhibit bilateral symmetry.

Thus, these are the characteristics that distinguish invertebrates from non vertebrates chordates.

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Answer:

Object A, by 0.5 cubic centimeter      

Explanation:

Density (d) is given by :

[tex]d=\dfrac{m}{V}[/tex]

m is the mass of an object

V is its volume

For object A:

[tex]V_1=\dfrac{m_1}{d_1}[/tex]

[tex]V_1=\dfrac{9\ g}{10\ g/cm^3}=0.9\ cm^3[/tex]...........(1)

For object B:

[tex]V_2=\dfrac{m_2}{d_2}[/tex]

[tex]V_2=\dfrac{4\ g}{10\ g/cm^3}=0.4\ cm^3[/tex]...........(2)

From equation (1) and (2) it is clear that volume of object A is greater by 0.5 cm³. So, the correct option is (b) "Object A, by 0.5 cubic centimeter".

Final answer:

Bryophytes, lacking vascular tissue, are unable to conduct water and nutrients efficiently, which keeps them small and confines them to moist environments. They use diffusion and osmosis to absorb what they need and lack true roots, stems, or leaves.

Explanation:

Because bryophytes do not have vascular tissue, they are unable to conduct water and nutrients efficiently throughout their bodies. Vascular tissue, which comprises of xylem and phloem, is the specialized system for this transport in vascular plants. Bryophytes lack these structures and hence cannot transport water and nutrients over long distances, limiting their size and habitat to moist environments where these resources are readily available.

Bryophytes include species such as mosses, liverworts, and hornworts, and they thrive in habitats ranging from tundras to deserts, although their growth is primarily dense in damp areas. Their inability to conduct water and nutrients effectively is due to the absence of lignin-reinforced cells, which are present in the vascular system of more advanced plants. Instead, they rely on diffusion and osmosis across their gametophyte surfaces to absorb moisture and nutrients.

The lack of a conductive system also means that bryophytes typically do not have true roots, stems, or leaves, and instead, possess root-like structures (rhizoids) for anchorage and absorption of water and minerals. This evolutionary trade-off has restricted bryophytes to smaller sizes and limited their competitive ability against larger vascular plants in drier environments.

Answer:

This plant is probably an angiosperm and its pollination is through insects.

Explanation:

We can conclude that this plant is an angiosperm because it is a plant that produces seeds.

Angiosperms produce root, stem, leaf, flower, seed and fruit. Considering these structures, note that in relation to gymnosperms, angiosperms present two "novelties": flowers and fruits.

Flowers can be eye-catching in color and shape; They also often give off a pleasant odor and produce a sugary liquid - nectar - that feeds the bees and other insects that will be responsible for pollination. There are also flowers that do not have colorful pieces, are not fragrant and do not produce nectar.

Answer:

Option B, [tex]25\\[/tex] %

Explanation:

The heterozygous genotype of the parent is Xx

The punnet square for the cross between the two parents having Xx genotype is  

X x

X XX Xx

x Xx xx

Thus,  

A represents the genotype – XX

B represents the genotype – Xx

C represents the genotype – Xx

D represents the genotype – xx

Out of four possible genotypes, XX (A) appears only once.

Thus the probability of occurrence of genotype A (XX) will be  

[tex]\frac{1}{4} * 100\\= 25\\[/tex] %

Answer:

B, 25 percent

Explanation:

hope i got it right

Answer:

A. Explains how organisms change in response to the environment.

Explanation:

A scientific theory is an EXPLANATION of an aspect in the natural world. In other words, it just tells why something happens. Now it is not just a guess, it is well-supported by evidence and previous studies.

Now to knock out your other choices:

B. is wrong because:

A scientific theory does not predict. It can serve as a basis for a prediction, or what you call a hypothesis, but it does not predict an outcome.

C. is wrong because:

As mentioned earlier, a theory is WELL-SUPPORTED by evidence and previous research.

D. is wrong because:

A theory does not become a scientific law.

A. Explains how organisms change in response to the environment.