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Synthetic vs Organic Fertilisers
V&V Books Vicens Vives Organización
- 1 lo usan
- 1279 visitas
Chemical fertilisers add nutrients to the soil, but they don’t add anything else. Plants needs more than just nutrients to survive. They also need organic matter and living organisms.
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Rate of digestion
V&V Books Vicens Vives Organización
- 1 lo usan
- 981 visitas
Digestion of food involves chemical reactions that break up large food molecules into their ?building block? components. There are a number of factors that affect the rates of these reactions.
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Shade balls - Wikipedia
V&V Books Vicens Vives Organización
- 272 visitas
Shade balls are small plastic spheres floated on top of a reservoir for environmental reasons, including to slow evaporation and prevent sunlight from causing reactions among chemical compounds present…
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True/False. Characteristics of changes in matter
EduBook Organización
- 2980 visitas
Answer true or false. In a chemical reaction, one or more substances, called reactants, are transformed into other substances called molecules. The number and type of atoms after the reaction is…
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Summaries - Obtaining and using energy
EduBook Organización
- 2609 visitas
1. Forms of energy Energy is a property of matter which gives it the ability to produce change in its own physical and chemical properties and in those of other bodies... The main forms. of energy are:…
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True / False.The digestive system and types of digestion
EduBook Organización
- 2472 visitas
Are these sentences true or false? The digestive glands produce digestive juices. The digestive system is made up of the alimentary canal and the intestines. There are two types of digestive processes:…
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Forms of energy
EduBook Organización
- 2344 visitas
1.1. Energy Energy is a property of matter which gives it the ability to produce change in its own physical and chemical properties and in those of other bodies. 1.2. The main forms of energy The main…
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Unit 5: Society and industrialisation in 19th century Spain
EduBook Organización
- 1898 visitas
Agricultural reform (n): reform in the ownership of land or in farming methods and crop production. banking sector (n): banks as a whole, considered as an area of the economy. chemical industry (n): the…
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Unit 1: Matter and Materials
EduBook Organización
- 1710 visitas
Alloy (n): a homogeneous mixture made up of metals or of a metal and a non-metal. atom (n): the smallest unit of matter, composed of particles called protons, neutrons and electrons. boiling point (n):…
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