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Climate change can change the breeding patterns of some animals. Breeding patterns refer to when and how animals reproduce, including…
Climate change can change the breeding patterns of some animals. Breeding patterns refer to when and how animals reproduce, including how many young an animal has and how often. If...
Leaves change color in the fall. Cooler temperatures in the fall cause the chlorophyll in leaves to break down. When…
Leaves change color in the fall. Cooler temperatures in the fall cause the chlorophyll in leaves to break down. When chlorophyll, which is green, begins to break down in leaves,...
Many changes have occured in the Rio Grande since the 1940s that have created a river that is deeper and…
Many changes have occured in the Rio Grande since the 1940s that have created a river that is deeper and faster. This has created problems for the Rio Grande silvery...
In this study, the scientists studied glaciers and their nearby rivers in Alaska. The water coming from glaciers can be…
In this study, the scientists studied glaciers and their nearby rivers in Alaska. The water coming from glaciers can be quite old and contain nutrients, such as carbon, that could...
In recent years, humans have been burning more and more fossil fuels. Fossil fuels are oil, natural gas, and coal.…
In recent years, humans have been burning more and more fossil fuels. Fossil fuels are oil, natural gas, and coal. One of the extra products created by burning fossil fuels...
Over the next 25 to 45 years, scientists think the Nation’s population will double. As the population increases, cities, suburbs,…
Over the next 25 to 45 years, scientists think the Nation’s population will double. As the population increases, cities, suburbs, and towns use more and more land. In order to...
Plague is an infectious disease that is transmitted to other mammals by fleas. Prairie dogs are particularly susceptible to plague.…
Plague is an infectious disease that is transmitted to other mammals by fleas. Prairie dogs are particularly susceptible to plague. The scientists in this study were interested in figuring out...
Scientists use models to predict what might happen in the future. Some scientists would like to predict the movement of…
Scientists use models to predict what might happen in the future. Some scientists would like to predict the movement of trees as they respond to a changing climate. The scientists...
Scientists believe that Earth’s climate is getting warmer. If the climate continues to get warmer, then there could be more…
Scientists believe that Earth’s climate is getting warmer. If the climate continues to get warmer, then there could be more cycles of freezing and thawing. The scientists wondered what would...
The scientists in this study were interested in comparing the water use efficiency of trees. They wondered if the water…
The scientists in this study were interested in comparing the water use efficiency of trees. They wondered if the water use efficiency of trees growing away from intermittent and ephemeral...
Many different types of birds live in riparian forests. In this study, the scientists were interested in black-chinned hummingbirds that…
Many different types of birds live in riparian forests. In this study, the scientists were interested in black-chinned hummingbirds that live in riparian forests. The scientists wanted to know if...
National forests and national grasslands are managed for all United States citizens. Parts of these forests and grasslands, however, may…
National forests and national grasslands are managed for all United States citizens. Parts of these forests and grasslands, however, may be leased to individuals and companies. Some individuals and companies...