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Biology
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Explain eutrophication and why it can lead to the death of invertebrates and fish in rivers.

Eutrophication is due to high levels of nutrients (nitrates) in the water. This leads to increased growth of algae and other plants which leads to "algal blooms". This is where the surface of...

AE
Answered by Ashleigh E. Biology tutor
6020 Views

What is the difference between an ectotherm and an endotherm?

Ectotherms, including reptiles and amphibians, are organisms that don't possess the ability to generate sufficient heat to keep themselves warm. As such, they are dependent on environmental sources of ...

ES
Answered by Ed S. Biology tutor
55003 Views

What is anaerobic respiration?

Anaerobic respiration is the release of small amounts of energy in the cells by breaking down food substances in the absence of oxygen.

OB
Answered by Oisin B. Biology tutor
2727 Views

Describe the processes involved in protein production within a cell

First, DNA-helicase (an enzyme) separates the two strands of DNA to allow RNA polymerase (another enzyme) to produce messenger RNA (mRNA) from free nucleotides, coded for by a gene in the DNA. The mRNA...

OB
Answered by Oisin B. Biology tutor
2684 Views

What is a gene?

A gene is a section of DNA that codes for a specific protein.

BC
Answered by Bethany C. Biology tutor
4039 Views

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