PPT-Aseel Samaro

Analysing adaptations for respiration They are both structures that transfer energy from type to another Mitochondria provides energy for our cells The power station provides energy for our homes. Investigating the effectiveness of . antacids . Introduction. Heartburn indigestion is caused by acid from the stomach irritating the upper digestive . tract.. For . those who suffer regularly, treatments are available to . Exploring the movement of water and minerals in plants. Water is needed in cells to support the plant and to . photosynthesise. . Minerals in the soil dissolve in water.. How do plants get the water and minerals they need? How do they move through the plant?. Calculating pressure. Calculating pressure is important to engineers.. For example, the foundations of a building have to carry the full downwards force of its weight.. There have been cases of buildings collapsing when the pressure on the foundations was too large.. Knowing how pollination leads to . fertilisation. . It is a pollen grain from a sunflower.. Pollen comes in a variety of shapes and sizes. The variety means that you might be allergic to one type but not another.. Exploring reactions of acids with carbonates . Introduction. Some rocks, such as limestone, contain a metal carbonate – limestone contains calcium carbonate. . Limestone . reacts with acids in a predictable way, and as new products are formed the limestone is eroded.. Exploring the importance of insects . Food security refers to the availability of food and the ability to obtain it. . What is the role of bees and insects in our food security?. How does agricultural practice impact on food security?. Understanding . challenges . facing pollinators . It a scanning electron micrograph (SEM) of a pollen basket of a worker honey bee. Worker bees go from flower to flower collecting nectar and pollen to feed the colony. Understanding electrostatic field. Charged objects can affect their surroundings even when they are not in contact.. Sometimes people believe that they can ‘feel’ electricity in the air. The idea of an electrostatic field helps to explain this.. Changing . Physical state. When you make ice or melt the frost from a windscreen, you are making use of changes of . state.. What . is actually happening to the particles in these processes?. Introduction. Separating mixtures. If you put different objects together, such as different fruits in a bowl, toys in a box or sweets in a bag, you have a . mixture.. Simply . picking out one object separates it from the . Understanding . distillation. Distillation is used in making perfumes, fuels (such as petrol) and alcoholic drinks (such as vodka. ).. It . is an important separation process involving heating and cooling.. The heart is odd one out. The heart is made from cardiac muscle. The bicep muscle (in the arm), the calf muscles ( in the legs) and the diaphragm (in the chest) are types of skeletal muscles.. Investigating muscle strength . Gemstones, such as amethyst, are crystal that formed deep in the Earth’s . crust.. Water . dissolved salts and as this solution cooled over thousands of years, the precious crystals formed.. Introduction. Jamil. . Al-twaije. r . lina. . abdullah. References . WALKER’S PEDIATRIC GASTROINTESTINAL DISEASE PATHOPHYSIOLOGY • DIAGNOSIS •. MANAGEMENT. SIXTH EDITION. Nelson:s. textbook 20.