The correct answer is D. Bird flu.
Polio and smallpox are very rare today as they were eradicated hundreds of years ago and TB has been around for maybe thousands of years. Bird f!u was discovered in 1957.
1. Variations
2. Extinction
3. Behavioral
4. Functional
5. Structural
(C) earth's outer iron core
this is because iron is magnetic and therefore forms a strong magnetic field
The thing that makes a thing living is that they are made of cells, use and obtain energy, grow and develop, and living things respond to their enviroment.
Answer:
A mnemonic code
Explanation:
A mnemonic code is a memory aid so as to memorize or remember something.
It is code that helps to recall the information it represents easily.
For example :
ATM for Any time cash machine
or VIBGYOR to remember the colors in a rainbow.
To specify instructions these are widely used in computer programming and communications system operations.
