Each of these is an example of climate change leading to desertification except
a) higher temperatures on a global scale lead to higher levels of evaporation and less moisture in soils.

b) higher evaporation can lead to soil salinity levels increasing in certain areas of the globe.

c) more frequent droughts in southern europe and other areas will reduce the soil content. eliminate

d) increased temperatures will decrease the growth of plants on a global scale.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

The first generation of offspring from the cross of two parents is called the a. f1 generation b. f2 generation c. short generation d. p generation

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.