Answers: 1
Biology, 22.06.2019 07:00
An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?
Answers: 3
Biology, 22.06.2019 08:00
Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure
Answers: 1
Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
Answers: 1
Biology, 22.06.2019 15:00
Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources
Answers: 3
What word describes a microscope that remains in focus when the objective lenses are changed?...
Mathematics, 15.01.2021 03:20
Arts, 15.01.2021 03:20
Biology, 15.01.2021 03:20
Mathematics, 15.01.2021 03:20
History, 15.01.2021 03:20
English, 15.01.2021 03:20
Mathematics, 15.01.2021 03:20
Mathematics, 15.01.2021 03:20
Mathematics, 15.01.2021 03:20
History, 15.01.2021 03:20
Social Studies, 15.01.2021 03:20