Pest - correct answer An organism that competes with humans for food or space or is a danger to health. Pesticides - correct answer Are poisonous chemicals that kills pests. Features of an effective pesticide - correct answer -Specific -Biodegradable -Cost-effective -Not accumulate Specific - correct answer The pesticide is only toxic to on organism, which it is directed towards. Harmless to humans and any other organisms. Biodegradable - correct answer The pesticide once appl...

AQA A LEVEL Chemistry Exam 2023 Relative atomic mass - correct answer The average mass of an atom of an element, relative to 1/12th of the mass of an atom of Carbon-12 Relative molecular mass - correct answer Average mass of a molecule compared to 1/12th of the mass of a carbon-12 atom The Avogadro constant - correct answer the number of particles in a mole ideal gas equation - correct answer pV = nRT empirical formula - correct answer the simplest whole number ratio of atoms of...

AQA Chemistry A Level Exam What is the relative mass and charge on a proton? - correct answer Mass 1 charge +1 What is the relative mass and charge on a neutron? - correct answer Mass 1 Charge 0 What is the relative mass and charge on an electron? - correct answer Mass 1/2000 Charge -1 What is the mass number? - correct answer The total number of protons and neutrons in the nucleus of an atom What is the Atomic (proton) number? - correct answer This is the number of protons in the...

Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students’ responses to questions and that every associate understands and applies it in the same correct way. ...

Section A Issues and debates in psychology Answer all questions in this section

A-level BIOLOGY Paper 3 S - The Marketplace for Revision Notes & Study Guides Downloaded by: jessicaonyebuchi | Distribution of this document is illegal S - The Marketplace for Revision Notes & Study Guides 2 *02* IB/M/Jun20/7402/3 Do not write outside the Section A box Answer all questions in this section. You are advised to spend no more than 1 hour and 15 minutes on this section. 0 1 Guppies are small fish. Female guppies are dull in colour. Male guppies can be bright or dull...

AQA AS Level Biology Revision Questions

AQA AS LEVEL BIOLOGY REVISION NOTES (Latest 2022) Questions and Answers