Answer: emigration or increase in death rate
Explanation:
Many factors can modify the animal population in a specific area.
Amphibian populations are affected mostly by changes in temperatures, altered dry season rainfall, and modified leaf litter depth.
Considering the options provided, only emigration and an increase in death rate could explain the decrease of the frog population.
Immigration and an increased birth rate would result in the population growing, not decreasing.
<span>The goal of the Dawes Act of 1887 regarding native americans indians was to divide up large amounts of Native lands and allocate it to individual Natives--in order to have the Natives "assimilate" more in the US. </span>
-their brain size increased. This means that they adopted more intelligent traits
-for tools and weapons, they made them more lighter.
-they were the first to create art as hominids
