Biology, 18.02.2021 21:30 tristina20
African elephants once existed in large populations across the African continent. Elephants use their tusks to dig for water and food. Humans hunt and kill elephants for their tusks. Habitat loss and fragmentation have also reduced the total number of elephants and the size of elephant herds. Scientists estimate that the number of African elephants has decreased from several million to several hundred thousand. Population sizes range from over 100,000 individuals in Botswana to approximately 100 individuals in northern Cameroon. Scientists have also found that the frequency of elephants that never develop tusks is increasing.
A. The elephant population in Botswana will experience high levels of genetic drift.
B. The poaching of elephants for their tusks is leading to the evolution of tuskless elephants.
C. Having tusks does not provide a selective advantage to African elephants.
D. Habitat fragmentation leads to decreases in population size and increases in genetic drift.
E. The elephant population in Cameroon will experience high levels of genetic drift.
Answers: 2
Biology, 21.06.2019 19:30
What is a universal way that predation benefits the predator? predation increases mate availability. predation in defense of space. the predator gets the energy it needs to survive. the predator keeps parasites from hurting the species.
Answers: 1
Biology, 21.06.2019 21:00
In natural selection, what is actually โselected? โ a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected
Answers: 2
Biology, 22.06.2019 05:00
Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.
Answers: 2
Biology, 22.06.2019 08:20
Which characteristics are typical of a human population in the postindustrial stage?
Answers: 3
African elephants once existed in large populations across the African continent. Elephants use thei...
Health, 01.11.2020 19:20
English, 01.11.2020 19:20
English, 01.11.2020 19:20
Chemistry, 01.11.2020 19:20
Mathematics, 01.11.2020 19:20
Mathematics, 01.11.2020 19:20
Mathematics, 01.11.2020 19:20
Mathematics, 01.11.2020 19:20
Mathematics, 01.11.2020 19:20
Social Studies, 01.11.2020 19:20
English, 01.11.2020 19:20