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How can I factorise a quadratic equation?

A quadratic equation is an equation of the form y = ax² + bx + c where a, b and c are constants (for example 5, -2 or 0). To "solve&qu...

Answered by Tom R. • Maths tutor

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Describe the structure of DNA and where it is found inside a human cell

The DNA molecule is found within the nucleus of the cell, organised into chromosomes. In humans, there are 46 chromosomes. The DNA molecule consists of organic bases joined by sugars and phosphate mole...

Answered by Kelly T. • Biology tutor

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Was Augustus' Foreign Policy after 27BC peaceful?

After the First so called Constitutional Settlement in 27BC where Augustus was given his name and attempted to return powers on account of his ill health, the Senate had ipso facto give...

Answered by Charles B. • Classical Civilisation tutor

10458 Views

First organisms on Earth were fully aquatic. About 460 mya a lineage of algae moved onto land and gradually adapted to air and soil. Name two evolutionary problems that first land plants faced when transitioning from water to land?

Examples of physiological problems and the adaptations of plants:

Body support. As organisms in water face lower pressure than in air, algae did not need to have composite body part...

Answered by Ivana L. • Science tutor

4881 Views

What are the two main processes of glacial erosion and how do they work?

Firstly it is important to understand what erosion is. This is when exposed rocks are broken down by water, wind or ice and the product of this is transported away in one of the aforementioned mediums....

Answered by Hamish M. • Geography tutor

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