The image shows EKGs of a person with normal heart waves and of a person having tachycardia. Based on this image, what kind of condition is tachycardia?
normal heartbeat
Anh
tachycardia
OA. The heart beats abnormally fast.
ОВ, The heart beats abnormally slow.
OC. The right atrium of the heart stops working.
OD
The left ventricle pumps less blood to the aorta.

answer by yourhope:

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human impact on the environment can be seen in the deterioration of the !

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the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question