The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent
A student takes 2 g samples of calcium carbonate and adds them to 20 cm3 samples of dilute hydrochloric acid at different temperatures. She measures how long it takes for
“Education is a progressive discovery of our own ignorance.” ― Will Durant
What is a wireless network? Answer: A wireless network is a network that allows devices to connect and communicate wirelessly...
1.(a) Describe the structure of the heart. (7) Marks) (b) Describe the events of the cardiac cycle in humans.( 8Marks) 2.(a)Describe the process of digestion in the (2 Marks) i.
In organic chemistry, an alkene is a hydrocarbon containing a carbon–carbon double bond. The double bond may be internal or in the terminal position.
“But remember this, Japanese boy... airplanes are not tools for war. They are not for making money. Airplanes are beautiful dreams. Engineers turn dreams into reality.” ― Hayao Miyazaki, The
“Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge.” ― Mark Twain
Here are 20 discussion questions in wave theory in physics:These questions cover various aspects of wave theory, including the properties and behaviors of different types of waves and their applications
Synthetic polymerization refers to the process of chemically synthesizing polymers, which are large molecules composed of repeating subunits called monomers.
“Even boring classes are ones you must get A’s in. The stakes are too high, the payoff too important.” ― A.D. Aliwat, In Limbo
A wildlife park has a database table, called LIVESTOCK, to classify and record its animal species. Part of the database table is shown.
1. Wave deposition in shallow waters across the mouth of a bay forms a? A. bar. B. tombolo. C. spit. D. mudflat 2. Which of the following economic activities is
1. Study the table below showing Africa’s population growth between 1940 and 2000 and answer questions which follow. (a) Draw a line graph to show the information contained in the
“Manufacturing is more than just putting parts together. It's coming up with ideas, testing principles and perfecting the engineering, as well as final assembly.” ― James Dyson
Enzymes are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different
The diagram shows some of the structures in a human lung. Where is the carbon dioxide concentration highest?
A photon is a fundamental particle of light and electromagnetic radiation. It is the smallest discrete unit or quantum of electromagnetic energy. Photons are the carriers of the electromagnetic force
In chemistry, an alcohol is a type of organic compound that carries at least one hydroxyl (−OH) functional group bound to a saturated carbon atom.