1. fossils and chemical isotopes found in sediments and glacial ice
By studying the type of climate fossilized species preferred global temperature trends can be inferred. The changes in the concentration and type of isotopes are also an accurate measurement tool of these changes.
2. decrease in mortality because winter is warmer
The phenomenon known as global warming will bring more extreme weather. Thus, it is possible for some winters to be very cold and summers be very warm.
Even with warmer winters, the mortality will not decrease. Without a snow cover, pests such as mosquitoes and pathogens will thrive and live for longer periods of time. Thus, the spread of diseases will increase which will lead to potential increases in mortality.
3. all activities by humans affecting the Earth and its biosphere
Anthropogenic activities are all activities by humans affecting the Earth and its biosphere.
4. decline in sea ice
The main cause behind declining numbers of polar bears is the diminishing size of the sea ice. The bears use the ice as hunting ground where they stalk seals.
Answer:
, tree rings usually grow wider in warm, wet years and they are thinner in years when it is cold and dry.
Explanation:
Answer:
Phytoplankton lowers the amount of atmospheric carbon dioxide by absorbing carbon dioxide.
Explanation:
The oceans influence the climate by absorbing and storing carbon dioxide. Plankton influence the exchange of gases between the atmosphere and the sea.
Tadpoles are baby's and Frogs are grown. Tadpoles have tails and are beginning to develop and Frogs are fully or mostly developed.
