Answer:
The percentage of space not occupied by solid matter in soil is called :
B. Porosity.
Explanation:
- Porosity is represented as the percentage of void in the soil.
- In simple words, it is the number of pores present in a soil.
- The porosity of soil is a factor that determines the quality and suitability of the soil for agriculture.
- A more porous soil does not hold lot of water and nutrient while a less porous soil retains water and nutrient.
- Thus neither a extremely porous nor a less porous soil is suitable for agriculture.
Cardiac muscles is the answer
Cacti grow in the desert, which is a very hot climate. Not the best for both gaining and maintaining water supplies, due to the fact that water becomes vapour very quickly in conditions such as a desert (unless we're talking about polar deserts).
Keeping their stomata closed during the day stops water vapour from escaping their cells. While this does inhibit growth and stop new water molecules from entering, it allows the cactus to maintain a healthy amount of water within itself.
Answer:
Explanation:
Global warming is the increase in the Earth's temperature caused by the buildup of greenhouse gases in the atmosphere such as carbon dioxide, methane, and nitrogen. The absorbed energy warms the atmosphere and the surface of the Earth.
Fossils fuels are bad for the environment because it emits air pollutants that are bad. When fossil fuels are burned it causes something called Sulfur dioxide, which causes acid rain.
