how does pollution travel from a river to the ocean?

a) pollution flows upstream toward the ocean

b) pollution flows downstream toward the ocean

c) pollution flows toward the bank of a river and then to the ocean

d) pollution flows toward the source of a river

Answer: well, ce dependent species such as narwhals, polar bears, and walruses are at increasing risk with shrinking sea ice cover. ... As the Arctic loses snow and ice, bare rock and water absorb more and more of the sun's energy, making it even warmer. This is called the albedo effect.

Explanation:

Answer:

1: 75%

2: 75%

3: 50%

4: 25%

DNA attributes to the genotype preference to the individual.  DNA contains the instructions for building RNA, which influences traits. The correct statement is answer A.

DNA stands for deoxyribonucleic acid.

DNA contains the orders that are needed for any organism in order  to develop, survive as well as reproduce. To carry out these duties, DNA sequences are needed to be converted into messages which can be used to produce proteins in  which are the complex molecules that are  doing  most of work in our body.

Since we have two pairs of chromosomes and we also have two pairs of genes in which  one  is from our father and one is  from mother. These pairs of genes then determine certain physical features or traits.

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Answer:

notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-an4l tail

Explanation:

had to censor second to last word but the 4 is an a

Answer:

diabetes can damage your blood vessels and the nerves that control your heart and blood vessels, causing to have a bad affect on your cardiovascular system.

Answer: B. Neuritic zone

Answer:

Fit

Explanation:

They are the ones who are strong enough to survive.

Answer:

Mitochondria

Explanation:

Answer:

i didnt know that..!

Explanation:

Answer:

9/16

Explanation:

CcxCc = CC, Cc, Cc, cc (3/4)

DdxDd = DD, Dd, Dd, dd (3/4)

3/4 x 3/4 = 9/16

Answer:

Proteins.

Explanation:

Genes contain instructions to  assemble amino acids in proteins.

Answer:

i don't know ajisjdbehanjakdiodjebfbnakoy

Answer: A dichotomous key is a tool that allows the user to determine the identity of items and organisms in the natural world. It is the most widely used form of classification in the biological sciences because it offers the user a quick and easy way of identifying unknown organisms.

Explanation:

Answer: by studying the Fossil record we can tell how long life has existed on earth,and how different plants and animals are related to each other.often we can work out how and where they lived, and use this information to find out about ancient environments fossils can tell us about a lot about the past.

Explanation: If you like it please mark brainlest....

Answer:

it contains many genes.

Answer:

D: It contains many genes

Answer: A

Explanation:

the joints on the top of your skull is motionless

Answer:

Its c the third answer

Explanation:

Answer:

Agriculture consumes more water than any other source and wastes much of that through inefficiencies. Climate change is altering patterns of weather and water around the world, causing shortages and droughts in some areas and floods in others. At the current consumption rate, this situation will only get worse.

-WWF

Answer:

Explanation:

Texture

Answer:

Mass: 1.98892 x 1030 kg.

Diameter: 1,391,000 kilometers.

Radius: 695,500 km.

Surface gravity of the Sun: 27.94 g.

Volume of the Sun: 1.412 x 1018 km3

Density of the Sun: 1.622 x 105 kg/m3

Explanation:

Answer:

Ok here ya go

Explanation:

The lytic cycle is one of the two cycles of viral reproduction, the other being the lysogenic cycle. The lytic cycle results in the destruction of the infected cell and its membrane. Now during the lytic cycle of virulent phage, the bacteriophage takes over the cell, reproduces new phages, and destroys the cell. T-even phage is a good example of a well-characterized class of virulent phages.

is this answer good enough? That’s all I know to my knowledge

Answer:

Epistasis effect result into these offspring

Explanation:

Given

spotted coat (S) is dominant to solid color (s) and black (B) is dominant to brown (b)

Genotype of true-breeding black spotted rabbit BBSS

Genotype of  true-breeding brown solid rabbit bbss

Genotype of offspring BbSs

In normal crossing between BbSs and BbSs offspring of F1, should produce offspring in the ratio 9:3:3:1

But it does not happens in this case the simple reason could be  presence of Epistasis in which the alleles assort independently but do not express themselves because of the following reasons -

a) Interaction between two or more loci thereby resulting into new phenotypes

b) An allele at one locus masks effects of other allele at one or more loci

c) Allele at one locus modifies the effects of alleles at one or more other loci

Answer:

Amphibians

Explanation:

Answer: The answer is the following.

the question is: sound waves move through which medium?

a. water

b. ice

c. air

d. wood

the best answer to this question would be c. air. <3

Explanation:

The Speed of Sound: Sound travels at different speeds depending on what it is traveling through. Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Air is a gas so therefore, C. AIR IS THE CORRECT ANSWER :)

The sound waves move the slowest through which medium:

C.Air

Therefore, the correct option is C.

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Answer:

Affected individuals do not have children.

Explanation:

Answer:

Tiktaalik roseae

Explanation:

The discovery of the fossil, Tiktaalik roseae on a Canadian island gives credence to the fact that animals moved from living in water to living on dry land. This fish which has feature of land animals such as a neck, skull, and ribs is believed to have lived some 375 million years ago. It also has features of fish such as the fins and scales.

The discovery of this fossil is important to scientists because it confirmed their believe that there should be an organism that would prove that life transitioned from water to land. The fossil was discovered in the year 2004.

Answer:

Autosomal Recessive

Explanation:

The method of inheritance is autosomal recessive. Notice how the disease skips the parent generation. This indicates that parents have the recessive allele but do not express the trait. The individuals who are shaded in have two recessive alleles that were passed on from their parents, therefore they have the disorder.

Answer:  Identify the promoter and the stop signal (terminator).

Explanation:

DNA is a molecule that contains the genetic information in all living things. This information is used for the synthesis of proteins that make up the body and carry out vital functions of the organism.

The DNA molecule consists of two strands that wind around each other to form a double helix structure, where each strand has a central part formed by sugars (deoxyribose in the case of DNA) and phosphate groups. The four basic components of DNA are nucleotides: adenine (A), thymine (T), guanine (G) and cytosine (C). The nucleotides are joined together (A to T and G to C) by chemical bonds and form base pairs that connect the two strands of DNA. Depending on the sequence of nucleotides (which have different bases), different proteins are synthesized.

DNA replication consists of synthesizing another identical DNA molecule, using enzymes called polymerases, which are molecules specifically dedicated only to copy DNA. Transcription, on the other hand, is the process by which a copy of messenger RNA (mRNA) is generated from the sequence of a gene in the DNA. This RNA molecule leaves the cell nucleus and enters the cytoplasm, where it directs protein synthesis (a polymer made up of many amino acids).

Protein synthesis, or translation, involves translating the sequence of an mRNA molecule into an amino acid sequence during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding sequence of amino acids it encodes. To begin translation, a start codon (set of 3 bases) must first be identified, which is usually AUG that also codes for the amino acid methionine. Then, the codons that follow are read and the corresponding amino acids are added according to the genetic code. The transfer RNA (tRNA) is complementary to the anticodon at specific codons in the messenger RNA and carries the amino acid coding for the codon. In addition, ribosomal RNA (rRNA) is an RNA that is part of ribosomes and is essential for protein synthesis in all living things. rRNAs form the framework of ribosomes and associate with specific proteins to form ribosomal pre-subunits. To finish the translation, a termination codon has to be read, which can be UGA, UAG or UAA.

To revise the model to show transcription to form mRNA, the research should identify the promoter and the stop signal. The promoter is a DNA sequence required to turn a gene on or off. The transcription process starts at the promoter which is usually located near the beginning of a gene and has a binding site for the enzyme that is used to make a messenger RNA (mRNA) molecule. The enzyme RNA polymerase will keep doing the transcription until it reaches a sequence of DNA that is signal which indicates it should stop. This process is called termination, and it happens once the enzyme reaches this sequence, called terminator.