Answer:
natural selection acts by differential survival and reproduction
Explanation:
According to the evolutionary theory proposed by Darwin (1859), selection natural can be defined as the evolutionary mechanism of differential survival and reproduction by which individuals adapt and change over time. Natural selection states that individuals better adapted to their environments will have more chances to survive and reproduce, thereby having more chances to pass their genes to the next generation. Natural selection acts on any heritable phenotypic characteristic, while selective pressure is any environmental factor that influences an individual's survival/reproduction.
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
Are these your answers?
A. Sexual reproduction produces offspring that
are identical to the parents.
B. Sexual reproduction decreases the genetic
variability in the fish populations.
C. Sexual reproduction limits the spread of
harmful characteristics in fish populations.
D. Sexual reproduction allows populations to
adapt to new conditions over fewer
generations<span />
The potential concerns with genetic engineering can be some ethical concerns, decrease genetic diversity, and not understanding the full effects of altering DNA. The correct options are 1, 3, and 4.
<h3>What is genetic engineering?</h3>
Genetic engineering (also known as genetic modification) is a process that uses laboratory-based technologies to alter an organism's DNA makeup.
This could entail changing a single base pair (A-T or C-G), deleting a region of DNA, or inserting a new segment of DNA.
The potential concerns with genetic engineering can be some ethical concerns, decrease genetic diversity, and not understanding the full effects of altering DNA.
Thus, the correct options are 1, 3, and 4.
For more details regarding genetic engineering, visit:
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