This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. man can impact the carbon cycle in a negative way. all but one example below would negatively impact the carbon cycle. identify it.

a) planting a field of wheat
b) a factory with smoke stacks
c) the local landfill burning trash
eliminate
d) paved streets with many cars on the roads

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

What is one affect on the australian environment due to the introduction of non-native european rabbits