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Let's learn how to... - Air and the atmosphere
EduBook Organización
- 2143 visitas
Observe how air can move water What do we need? A plastic bottle. A plastic tube. A big plastic bowl. Plasticine. Water. What do we do? Cut the top off the bottle and fill it with water. Fill half of…
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Echinoderms
EduBook Organización
- 2113 visitas
3.1. Echinoderms Echinoderms are animals that live at the bottom of the sea. They do not have a head. They have an external skeleton consisting of plates with spines. The majority of echinoderms have a…
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Video: Introduction to Metabolism
Tiching explorer Organización
- 3150 visitas
This lesson includes an overview of metabolism, distinguishing between autotrophs and heterotrophs organisms and between catabolism and anabolism. We study intermediary metabolism and what a metabolite…
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Did you know?
EduBook Organización
- 2084 visitas
The mass of an object does not change when you move it from one place to another or take it to the Moon. But weight does vary, because the magnitude of gravity on Earth is not constant at 9.8 m/s2…
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The planets of our Solar System
EduBook Organización
- 2080 visitas
3.1. The nature of our Solar System Our Solar System consists of a central star, the Sun, and several other bodies bound by gravity that move around the Sun. These bodies include planets, dwarf planets,…
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Non-renewable energy sources
EduBook Organización
- 2080 visitas
Non-renewable energy sources Coal Coal is a sedimentary rock because it is made up of the remains of plants and animals that died millions of years ago. We can extract coal by digging mines. When we…
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Check. Materials that conduct and insulate heat
EduBook Organización
- 2053 visitas
Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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The digestive system (II)
EduBook Organización
- 2013 visitas
The mouth The mouth is the opening to the alimentary canal. We use our jaw to open and close our mouth. The inside of the mouth is made up of: Our teeth, which we use to chew our food. Our tongue, which…
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Video: Cellular transport
Tiching explorer Organización
- 2 lo usan
- 2443 visitas
This animated presentation shows how different compounds move across the membrane of the cell, how proteins are involved in this transport and how these proteins are regulated to modulate transport. We…
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O movemento
EduBook Organización
- 1991 visitas
Dicimos que un obxecto está en movemento cando cambia de posición ao longo do tempo. Este obxecto recibe o nome de móbil. 1.1. Traxectoria do movemento Un obxecto que se move vai ocupando diferentes…
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