Which two of the following are notable achievements of the Maya? options-
1. developing an extensive road system
2. creating a hieroglyphic writing system
3. Inventing an accurate Calendar system
4. establishing a unified tribute empire
5. creating advanced methods of irrigation.
I feel like it's number 1 and 2. I studied this class.

Correct answer is

2. creating a hieroglyphic writing system

3. Inventing an accurate Calendar system

Explanation:

First option is not correct as due to mostly mountainous terrain it was harder to built stronger road system.

The same goes with irrigational system, as they weren't able to develop extensive agriculture.

Also, their Empire created a first precise calendar system in the pre-Colombian America and one of the most accurate calendars based on solar year.

c- companies fail to take environmental protection into account. i think

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .