PLEASE HELP 50 POINTS BRAINLIST

Answer:

A. 17,100

Explanation:

The half life of carbon-14 is around 5,700 years. When the shell contains 50% of its original carbon-14, 5,700 years have passed. 25% means another 5,700 years have passed, meaning 11,400 years in total have passed. 12.5% means another 5,700 years have passed, meaning 17,100 years have passed in total.

Answer:

B. The DNA replicates.

Explanation:

Activity in the chromosomes must occur before the beginning of mitosis. The cells will enter the S1 phase in preparation to divide.

Answer:

B should be your answer

Explanation:

Answer:

Option 2 earthquakes

Explanation:

Hope it helps ^^

Answer:

It will be increased by a lot over the nect five years

Explanation:

Answer:

This species of fish don't do well in this habitat, we can see this because in 9 years the number of individuals went from 100 to 63, which is 37 individuals less. Over the next five years, the population will continue to decrease.

Answer:

A. increases genetic diversity

Explanation:

Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation.

Answer:

I think it's C

Explanation:

I hope this helps ^^

Answer: All inner planets are dense

Explanation: Mercurius, Venus, Earth and are more dense than Jupiter  

and Saturnus

Answer:

d

Explanation:

Answer:    There are six kingdoms: Archaebacteria, Eubacteria, Protista, Fungi, Plantae and Animalia. Organisms are placed in a specific kingdom based upon a variety of factors, including cell wall structure. As the outermost layer of some cells, the cell wall helps maintain cellular shape and chemical equilibrium.

Answer:

Where is the diagram? Take a phone of the diagram

Answer:

They're non-coding RNAs that help the messenger RNAs to undergo the protein translation process. These RNAs, like the other messenger RNAs, are made in the nucleus, but ribosomal RNAs are made in the nucleolus which is a very specific part of the cell nucleus.

Explanation:

Answer:

RNA is synthesized in the nucleus and then exported to the cytoplasm.

Explanation:

Ribonucleic acid is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes. RNA and deoxyribonucleic acid are nucleic acids

Answer:

the last one sorry if i'm wrong

Explanation:

According to the passage from the Biology Department at University of California, Berkeley.Northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely.

The best option that describes is" the population has not evolved because there was no change in allele frequencies.Thus, option B is correct.

The term population reffered to the total number of people living in a particular given area.The population of an organism can't survive if it exceeds it's carrying capacity.

The causes that affect population growth animals that if there are more plants than usual in area, populations of animals that eat that plant may increase.

If animal population increases the population that eat that animal might also increase.

The effects of animals population can be dangerous and when population exceed the carrying capacity of their environment, animal suffer of malnutrition and disease.

When predictors became scarce due to over population, the weekar species of animal start or die in other ways .

The accurate description of the growth of a natural animal population is limited by environmental factors.

Therefore,The best option that describes is" the population has not evolved because there was no change in allele frequencies.Thus, option B is correct.

Learn more about population here:

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Answer:

Mitosis

Explanation:

Mitosis is how somatic—or non-reproductive cells—divide. Somatic cells make up most of your body's tissues and organs, including skin, muscles, lungs, gut, and hair cells.

Answer:

C. Mutations are all permanent. Mutations can occur in many types of cells, and contribute to genetic diversity. Not all mutations are caused by harmful chemicals, as there are many natural mutations in nature. However, mutations are not always passed on from parents to offspring.

Answer:

EE. Large Eyes

oo. Round face shape

Ss. straight hair

CC.normal chin

Cc. normal chin shape

ee. Small eyes

ss. Curly hair

Oo. Oval face shape.

Answer: RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.

Explanation:

Messenger RNA or mRNA is a single-straded ribonucleic acid that transfers the genetic information from the DNA (deoxyribonucleic acid) molecule of the cell nucleus to a ribosome (which are the machinery responsible for protein synthesis) in the cytoplasm. mRNA determines the order in which the amino acids of a protein will be joined and acts as a template or pattern for the synthesis of that protein. To accomplish this, the DNA molecule must be transcribed into an RNA molecule, which is used for protein synthesis.

The messenger RNA obtained after transcription is known as primary transcribed RNA or precursor RNA or pre-mRNA, which in most cases is not released from the transcription complex in a fully active form, but in eukaryotes it must undergo modifications before it can perform its function (RNA processing or maturation). These modifications include:

The mature mRNA (in eukaryotes) is transferred to the cytosol of the cell through pores in the nuclear envelope. Once in the cytoplasm, ribosomes are coupled to the mRNA. However, in prokaryotes, ribosome binding occurs while the mRNA strand is being synthesized. After a certain amount of time, the mRNA is degraded into its component nucleotides by ribonucleases. So, the transcription and translation processes are carried out in a similar way as in eukaryotic cells but they occur simultaneously. But, the fundamental difference is that, in prokaryotes, the messenger RNA does not undergo a maturation process and, therefore, no cap or tail is added and no introns are removed. Moreover, it does not have to leave the nucleus as in eukaryotes, because in prokaryotic cells there is no defined nucleus.

So, RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.

Answer:

I will GUESS B is your answer

Explanation:

Answer:

He will use a radioactive element with a long half life of greater than 1 billion years

Explanation:

Rocks are an aggregation of solid mass which is usually rich in minerals. The age of rocks is established using radiometric dating method.

According to Oxford Dictionary, radiometric dating is "a method of dating geological specimens by determining the relative proportions of particular radioactive isotopes present in a sample."

The age of rocks can only be ascertained using isotopes that have very long half lives because many of these rocks are very old (aged billions of years) hence their age can only be determined using elements that has a half life greater than 1 billion years.

you have to addd more

Explanation:

you have to add more to your question, its is hard to answer

Answer:

Directly affects.

Explanation:

Climate, resources, and habitat size directly affect  carrying capacity of an ecosystem. Favourable climatic and environmental conditions increases the population of organisms to its maximum limit. More resources leads to increase in population of species in an ecosystem until carrying capacity. Habitat size also depends on carrying capacity which means higher carrying capacity can leads to bigger habitat size. Climatic change, Habitat destruction, introduced and invasive species and genetic pollution are factors that effect both biodiversity and population. Human activities causes pollution, destruction of habitat by cutting trees etc affects biodiversity.