What cell is this ?

Answer: The Earth's axis rotates (precesses) just as a spinning top does. The period of precession is about 26,000 years.

Explanation:

Answer:

The Earth's axis rotates just as a spinning top does. The period of precession is about 26,000 years.

Explanation:

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Answer:

Coal is mined in two different ways: from deep underground and in

strip mines. In both cases the land that is mined is leased by the coal companies, while the ownership remains in public hands. Deep mines are reached through a shaft into the ground, through which miners gain access to the coal seam and out of which comes the coal. Strip mines are used when the coal seam is near the surface. The topsoil and other overburden materials are removed by giant power shovels and piled out of the way. The shovels then dig out the coal. After the coal has been mined, there may be environmental reclamation to return the land to its original state, thus allowing others continued use of it for their own purposes. This involves refilling the hole, spreading topsoil, and then planting new vegetation on it.

Answer:

69

Explanation:

60+9=69

Answer:

B)Metaphase

Explanation:

During metaphase, the nuclear membrane disappears and the chromosomes become aligned half way between the centrioles.

Answer:

Prophase

Explanation:

D

Answer:

Carbon Dioxide

Explanation:

During cellular respiration, glucose and oxygen are converted into carbon dioxide.

All humans have 46 chromosomes, 23 derived from either biological parent who has their own set.

Sex chromosomes make gene passing possible through creating offspring.

Answer:

D: kinetic

Explanation:

Kinetic energy is the energy of motion. This can be the motion of large objects (macroscopic kinetic energy), or the movement of small atoms and molecules (microscopic kinetic energy).

Explanation:

in indoor they could slip and in same in outdoor

Answer: The method best suited for neutralising the acidic components of waste is chemical treatment. Option C.

Explanation:

Chemical wastes are seen during industrial processes. These wastes include: acids, alkalis, organic solvents, detergents, oils, dyes and heavy metals ( example; mercury, copper and lead). Normally, these wastes should be treated and made harmless before they are emptied into the rivers, lakes and seas. If not treated, the effect of these chemicals on the aquatic ecosystems is extremely harmful.

CHEMICAL TREATMENT of waste is a procedure which is carried out on dangerous acidic waste products to change its chemical properties by neutralisation with basic solutions. Neutralisation is a chemical reaction between a base and an acid. The products formed are salt and water which are less harmful to the ecosystem.

The ACIDIC components of the chemical wastes should be neutralised with an appropriate base solution before disposal to avoid it's harmful effects on the aquatic ecosystems. This is because most chemical wastes are non- biodegradable.

Answer:

Autotrophs

Explination: They are called this because they use the energy and simple inorganic compounds to produce organic molecules.

Answer:

They would all have longer fingers to grasp the thicker branches, directional.

Explanation:

To grasp a thicker branch, you’ll need longer fingers. Directional selection favors one extreme phenotype (physical trait), while disruptive selection favors both extremes and stabilizing favors neither extreme. Hope it helps :)

To grasp a thicker branch, you’ll need longer fingers. Directional selection favors one extreme phenotype (physical trait), while disruptive selection favors both extremes and stabilizing favors neither extreme.

Natural selection that discriminates against the typical person in a population is known as disruptive selection.

This kind of population would consist primarily of phenotypes at either extreme and very few individuals in the middle. The rarest of the three types of natural selection, disruptive selection can cause a species line to diverge.

In essence, it depends on which members of the group have the highest chances of surviving—those who get to mate. They are the ones with characteristics that lie at the very edges of the spectrum.

Therefore, To grasp a thicker branch, you’ll need longer fingers. Directional selection favors one extreme phenotype (physical trait), while disruptive selection favors both extremes and stabilizing favors neither extreme.

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Answer:

The pricipal function of a accuretely designed bioreactor is to give a controlled environment to achieve optimal growth and/or product formation in the particular cell system employed.

Answer:

it's binary fission

because --The cell division process of prokaryotes, called binary fission, is a less complicated and much quicker process than cell division in eukaryotes. ... The single, circular DNA chromosome of bacteria is not enclosed in a nucleus, but instead occupies a specific location, the nucleoid, within the cell.

Answer: Solar radiation is absorbed more by land surfaces than by water. Solar radiation from its surface is reflected from water and returned to the environment. Keeping the land surface warm, as well as the vegetation for energy, because land absorbs much more solar radiation. The warmer the surface of land, the quicker it warms.

Explanation:

Answer: Cloning could allow us to produce the perfect human race - one which was hardy enough to withstand all diseases. We could create a world where every human lived to old age without the genes which create psychological or physical problems. and why they are bad because A new study on cloning shows more than ever it's probably a very bad idea to replicate human beings. The study, performed by researchers at the Whitehead Institute for Biomedical Research in Boston, found that cloning to create new animals will almost always create an abnormal creature.

Explanation:

Answer: Both are correct

Explanation:

Answer:

A

Explanation:

They have the same primary DNA but may have different plasmids.

The two daughter cells which are formed after the binary fission of a bacterial cell have the same primary DNA but may have a different set of plasmids. Thus, the correct option is B.

Binary fission is a type of asexual reproduction where a cell body is separated into two different bodies.

During binary fission, the genetic material of an organism is duplicated in the parent cell which enables the two new organisms formed to be able to contain the separate copy of DNA in their nucleus.

In a bacterium cell, when the two daughter cells are formed after the process of binary fission, they contain the same primary DNA but have different plasmids.

Therefore, the correct option is B.

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Answer:

1. 1,000

2.100

3.10

Explanation:

Every time you go up the food pyramid each level gains only 10%, so you would find ten percent of each one

Answer:

false, its less dense than air

Explanation:

Answer:

False

Explanation:

Answer:

hello your question has some missing information attached below is the missing information

answer :

New planktonic larvae species  =  10 species

New Non-planktonic larvae species = 26 species

Explanation:

calculate for the number of new species that form in each group

From the question it can seen that 3 species were present before 60 mya in each set

hence to calculate for the number of new species that form in each group

= Total number of species - number of species present at the beginning of 60mya

Group 1 ( New planktonic larvae species )

= 13 -3 =  10 species

Group 2 ( New Non-planktonic larvae species )

= 29 - 3 = 26 species

Answer:

The law of conservation of mass

Explanation:

In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so the quantity can neither be added nor be removed.

rho = density

t = time

nabla = divergence

v = flow velocity field

Answer:

Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition.

autotrophs are known are known as producers because they are able to make their own food from raw materials and energy, such as plants, algae and some types of bacteria.

heterotrophs are known as consumers Because they consume producers or other consumers such as dogs, birds, fish and humans.

Answer:

transcription initiation

Explanation:

Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:

1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.

2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence

3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).

In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.

Answer:

Construction of an offshore breakwater

Explanation:

A beach community was recently negatively affected by a hurricane. Community leaders are looking for a potential solution to prevent damage from future hurricanes. Below is a list of their concerns as well as how important each issue is to the community.

Community Concerns Concern Level

Wave action Low

Beachfront development Low

Nearshore aquaculture Low

Health of nearby coral reef Moderate

Roosting bird species High

Storm surge threat High

Construction of an offshore breakwater

Answer:

Global warming 100%  one of them.  And Air pollution.

Explanation:

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