Humans have converted a large portion of a grassland ecosystem into pastureland on which to graze cattle Overgrazing by the livestock is leading to desertification. Which of these would most likely help reverse the desertification occurring in this ecosystem?
A. evenly distribute the cattle across the ecosystem so that the cattle can graze equally in each area
В.
regularly rotate the cattle to different locations in the ecosystem so that no area is constantly being used for grazing
C. clean up manure produced by the grazing cattle so that less waste is able to enter the ecosystem
D
replace some of the cattle with other livestock so that there is a greater variety of grazing animals

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. which of the following can be considered a population? question 9 options: all plants in the same area all cacti in the same area all species in the same area the lizards and the ants

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals