I'm not 100% sure... but I would say B.
The Mayan and other Mesoamerican cultures used a vigesimal number system based on base 20 (and, to some extent, base 5), probably originally developed from counting on fingers and toes. The numerals consisted of only three symbols: zero, represented as a shell shape; one, a dot; and five, a bar.
Moral altruism
they helped informed only by ethical consideration regardless of any rivalry between the teams. Moral altruism is the highest calling in altruism(helping others selflessly) the team did not consider that if they failed to provide shelter to the other team it would get some advantage over it.
Answer:
No, I don’t agree that there are enough resources on earth to support increase in per capita consumption rates if human population growth rates stay the same.
Explanation:
- The population is growing at a much higher rate than we expect it to be. According to statistics, in recent years we've been adding about a billion people every 12 or 13 years or so.
- There are no any resource which lasts eternity, so we must use it very wisely.
- And we all know the consequences of the increasing population. The resources are limited and population is excessive so with this rate of growth of population and limited resources, we are the guest for few decades only.
This layer of soil is called the A horizon.
