Biology, 22.07.2019 08:50 creeper2737
Abnormal levels of are linked to anxiety and depression. a. glutamate b. endorphins c. norepinephrine d. serotonin
Answers: 2
Biology, 21.06.2019 16:20
The use of dna as evidence in criminal investigations became possible because of the
Answers: 3
Biology, 21.06.2019 22:30
How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.
Answers: 2
Biology, 21.06.2019 23:00
What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid
Answers: 3
Biology, 22.06.2019 03:00
To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.
Answers: 1
Abnormal levels of are linked to anxiety and depression. a. glutamate b. endorphins c. norepinephri...
History, 06.11.2020 06:10
Mathematics, 06.11.2020 06:10
Advanced Placement (AP), 06.11.2020 06:10
Social Studies, 06.11.2020 06:10
Mathematics, 06.11.2020 06:10
Mathematics, 06.11.2020 06:10
Mathematics, 06.11.2020 06:10
Physics, 06.11.2020 06:10
Mathematics, 06.11.2020 06:10
Mathematics, 06.11.2020 06:10
Health, 06.11.2020 06:10