All over the universe things are ---------------------------.
Huge ------------------------------ are made up of millions of stars moving around them.
---------------- tells us how fast something is moving.
During a real journey speed changes many times. These vibrations in speed can be shown on a ---------------------------------------.
The fastest possible speed in the universe is the speed of -----------------------.
The area under a speed-time graph is equal to the ------------------ travelled.
If two forces are acting on a block of wood the both forces are ------------------------- forces.
------------------------------------ put together his laws of motion.
Speed is measured in --------------.
---------------------------------- acts against gravity and reduces the acceleration.
--------------------------------- is the rate of reduction of velocity per unit time.
Tension is the -------------------------- resulting from forces acting in opposition to each other.
------------------------------ is the force that attracts a body towards the centre of the earth.
When a car is accelerating the speed of car is --------------------------.
Gravity makes a falling object accelerate downwards at --------------.
Chapter: 05 where does our food come from?
--------------------- are at top of a very complex food web.
Farmers add mineral element to their soil in the form of -----------------------.
Dried sea-bird droppings -------------------------- are in excellent source of phosphate.
--------------------------------- can also happen if too much untreated sewage gets into streams and rivers.
A thick blanket of ------------- caused by too much fertilizer in the water.
Plants make energy available to other organism by -------------------------- it from sunlight.
Plants need ----------------------------------to make food.
Brightly coloured, sweet smelling flowers attract insects for -----------------------------.
Plants growing in the wrong place especially in cereal crop are called--------------------.
-------------------------------- are used to kill any fungal competitors.
Herbicides, fungicides and insecticides are all -------------------------------.
---------------------------------------- can be grown far away from natural habitat.
The most common saprophyte are ------------------.
Plants use---------------------------------- light in photosynthesis.
Levels of DDT build up in the ---------------.
--------------------- can cover large areas at low cost.
In ---------------------------------- carbondioxide can be added to the air and mineral can be added to the water.
Aircraft are used to
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