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serious [3.7K]
4 years ago
8

Identify and describe two possible consequences of climate change on coastal ecosystems.

Biology
1 answer:
Reptile [31]4 years ago
3 0
Water levels would rise or fall, washing away existing beaches and threatening habitats of coastal animals or creating additional beach and lowering water levels, threatening the habitats of oceanic animals. Another is that water temperature may increase or decrease, harming aquatic life. 
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Part A
quester [9]

Answer:

0.2 (or 20%)

Explanation:

The allele frequency can be calculated by counting how many times an allele appears in a population and then by dividing this number by the total number of alleles of the gene. In this case,

- Genotype BB = 30 moths >> 60 copies of the B allele

- Genotype Bb= 12 grey moths >> 12 copies of the B allele and 12 copies of the b allele

- Genotype bb= 3 white moths >> 6 copies of the b allele

The total number of copies of the gene is:

Dominant (B) allele = 60 (BB genotype) + 12 (Bb genotype) = 72 B alleles

Recessive (b) allele = 12 (Bb genotype) + 6 (bb genotype) = 18 B alleles

Then, 72 + 18 = 90 alleles  

Allele frequencies:

Dominant (B) allele = 72/90 =  0.8 (or 80 %)

Recessive (b) allele = 18/90 = 0.2 (or 20%)

3 0
3 years ago
A new nucleotide can only be added to the _____ end of a growing dna strand. dna therefore always grows in the _____ direction.
PilotLPTM [1.2K]

A new nucleotide can only be added to the 3' end of a growing dna strand. dna therefore always grows in the 5' to 3' direction.

Define nucleotide.

Nucleotides are organic molecules made up of a phosphate and a nucleoside. They serve as monomeric units of the essential biomolecules found in all life forms on Earth, deoxyribonucleic acid(DNA) and ribonucleic acid polymers.

Define DNA.

Deoxyribonucleic acid(DNA) is a polymer made of two polynucleotide chains that coil around one another to form a double helix and which contains the genetic material necessary for all known creatures, including many viruses, to develop, function, grow, and reproduce. Nucleic acids include DNA and ribonucleic acid.

Learn more about DNA here:-

brainly.com/question/264225

#SPJ4

4 0
1 year ago
1. What makes water so unique?
Ulleksa [173]

Answer:

It is the reason the sky is blue

Explanation:

7 0
4 years ago
Read 2 more answers
Compare the variety of organelles found in plant cells and animal cells?
elena55 [62]

Answer: In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.

Explanation:

8 0
4 years ago
Read 2 more answers
2. Identify the epithelial tissue that is most suited to each of the following functions. a. diffusion of gases across lung air
Delicious77 [7]

Answer:

e. secretion, absorption and chemical protection

Explanation:

Epithelial tissues is responsible for the protection of the skin, absorption of nutrients during digestion and secretion of waste materials. These tissues form covering to all body surfaces. They also perform a variety of other functions such as excretion of waste substances, filtration of air from dirt and particles and clean the air that is inhaled, diffusion, and sensory reception.

7 0
3 years ago
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