Many paleoanthropological studies have proved the migration of Homo sapiens from Africa to North America with the Out-of-Africa theory.
Explanation:
Many paleoanthropological studies have proved that Homo sapiens migrated out of Africa and arrived in the North America.
The Out-of-Africa theory or the trellis theory is a theory which describes the migration of Homo sapiens from Africa to other parts of the world.
The Homo sapiens developed structures like skull, postcranial skeleton, along with cognitive abilities became unique among other Hominids. The origin of our ancestors, H. sapiens, H. eructus were profoundly from Africa from the Hominidae zoological family.
During the pre-historic era, these hominids and their various species migrated to parts of Eurasia, like the Neanderthals and also to the Far East.
Finally, with all the other evolutionary forms slowly receding with the completion of migration processes, the Homo sapiens were formed with a standing man. Later the H. sapiens developed physically and cognitively and became skilled to do many activities. Then they migrated towards North America and then to South America.
Answer:
Assume that the left ventricle of a child's heart has an EDV=90 mL, and ESV=60mL, and a cardiac output of 2,400 mL/min. His SV is _30_ mL/beat and his HR is _80_ bpm.
Explanation:
Calculation can be achieved by using this formula.
Stroke Volume (SV) = End diastolic volume – End systolic volume
Given that
End diastolic volume = 90
End systolic volume = 60
Calculations
Stroke Volume (SV) = 90 - 60
Stroke Volume (SV) = 30mL / beat
Heart rate can be calculated using this formula:
Heart Rate = Cardiac Output / Stroke Volume
Given that
Cardiac Output = 2400 mL / min
Stroke Volume (SV) = 30mL / beat
Calculations
Heart Rate (HR) = 2400 / 30
Heart Rate (HR) = 80
m bpm
Answer:
B. telegraphic speech
Explanation:
its b. because who ever is speaking is not speaking in complete sentences they are speaking in sections, like they are missing words which makes it telegraphic.