Answer:
ponds cooler than 20 °C
Explanation:
There is great effect of temperature on the dissolved oxygen in a pond water,
When the water is hotter it will hold less oxygen but when the water is cold it will holds more oxygen. Therefore, ponds cooler than 20 °C will will have a higher average oxygen concentration.
Answer:
Jupiter's moons are orbiting Jupiter while Jupiter's position doesn't change. Each day, there are some moons visible, while others are hidden behind Jupiter.
Answer:
Due to the presence of mountain range.
Explanation:
Jared Diamond describe that this mountain is responsible for the blocking of these domesticated species from reaching this other fertile region because in this geography mountain is a barrier for the transfer of domesticated species from one region to another. Due to harsh climatic conditions of geography of the mountain range, the survival of domesticated species is not possible.
The coastline is the term used
The correct answer is - North Africa.
North Africa is the region in Africa that has its main economic activities based around the production of oil phosphates and natural gas. The reasons for this are that the region has solid amounts of reserves of oil and natural gas in its territory, but also because big portion of the other economic activities are restricted because of the geography of the region. This region is almost entirely covered by desert, with little pockets that have Mediterranean climate along the coast. That is not allowing for lot of economic activities to take place, so the oil and the natural gas are by far the most exploited and bring in the biggest income.
