Which of the following describes the correct relationship between heart sounds and blood pressure?
systolic blood pressure is associated with the first heart sound.
systolic blood pressure is associated with the second heart sound.
diastolic blood pressure is associated with the first heart sound.
diastolic blood pressure is associated with the second heart sound.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.