plants contribute to us, humans life because they breath out oxygen so with fewer plants our lives are in danger because if that happens it will be harder for our noses to find oxygen in the air
Burning fossil fuels for energy production and transportation has had the greatest impact on increasing the amount of greenhouse gases, such as carbon dioxide, in the Earth's atmosphere. This activity contributes significantly to global warming and climate change.
Wyoming averages about 11 tornadoes per year.
The atmosphere extends about 62 miles (100 kilometers) from the Earth's surface. This region is known as the exosphere and marks the outer limit of Earth's atmosphere.
Ppm stands for parts per million. It is a way of showing the amount of one substance in another, like carbon dioxide in the atmosphere, especially when the percentage number is small. For example, in July 2011, the amount of carbon dioxide in the earth's atmosphere was 392.39 ppm (or 0.039239%).
If Earth's atmosphere contained twice as many molecules as it does today, the atmospheric pressure would also double. This is because pressure is directly related to the number of gas molecules in the atmosphere.
democracy
The green peacock's population declined significantly during the latter half of the 20th century because of overhunting and the destruction of large parts of its natural habitat; the species is now thought to number between 10,000 and 20,000 adults
increased; declined
The number of deaths of children from poisoning has declined from about 450 per year in the 1960s to about 50 each year in the 1990s.
The number of farmers declined.
Between 1997 and 2002, the number of family farms declined from 1.92 million to 1.90 million. However, the number of corporate farms also declined, from 185,607 to 129,831
Burning fossil fuels for energy production and transportation has had the greatest impact on increasing the amount of greenhouse gases, such as carbon dioxide, in the Earth's atmosphere. This activity contributes significantly to global warming and climate change.
It is difficult to provide an exact number, but Chinook salmon populations have declined significantly in recent years due to habitat destruction, overfishing, and climate change. Conservation efforts are being made to protect this species and its remaining populations.
It is difficult to estimate the exact number of lions in Africa in the 1950s, but it is believed that there were around 200,000 lions at that time. However, due to habitat loss, poaching, and human-wildlife conflict, the lion population has significantly declined since then.
The number one gas in martian atmosphere is carbon dioxide.
Most likely declined
The number of women working outside the home declined between 1945 and 1960.