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12 Mar 2022, 00:57
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Fossilized bones from the hominids Australopithecus robustus and Homo erectus were chemically analyzed. The robustus bones contained a lower ratio of strontium to calcium than did the erectus bones. The lower the ratio of strontium to calcium in fossilized hominid bones, the more meat the hominid had in its diet. H. erecrus is known to have eaten meat.
The statements above, if true, most strongly support which one of the following?
(A) The diet of A. robustus included at least some meat.
(B) The meat in the diet of H. erectus was higher in strontium than was the meat in the diets of other hominids.
(C) The diet of H. erectus was richer in calcium than was the diet of A. robustus.
(D) The diets of A. robustus and H. erectus both contained less strontium than calcium.
(E) The process of fossilization altered the ratio of strontium to calcium in the bones of both A. robustus and H. erectus.
The statements above, if true, most strongly support which one of the following?
(A) The diet of A. robustus included at least some meat.
(B) The meat in the diet of H. erectus was higher in strontium than was the meat in the diets of other hominids.
(C) The diet of H. erectus was richer in calcium than was the diet of A. robustus.
(D) The diets of A. robustus and H. erectus both contained less strontium than calcium.
(E) The process of fossilization altered the ratio of strontium to calcium in the bones of both A. robustus and H. erectus.
13 Mar 2022, 09:10
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The statements above, if true, most strongly support which one of the following?
IMO A
(A) The diet of A. robustus included at least some meat.
YES, we know that :
The A. robustus bones contained a lower ratio of strontium to calcium than did the erectus bones this implies they ate more meat that did erectus --> and if erectus had meat in there diet then A. robustus must have some meat in their diet too.
(B) The meat in the diet of H. erectus was higher in strontium than was the meat in the diets of other hominids.
No , we do not know abut all other hominids
(C) The diet of H. erectus was richer in calcium than was the diet of A. robustus.
No, we just know if it was rich in meat, nothing about calcium in the diet is given.
(D) The diets of A. robustus and H. erectus both contained less strontium than calcium.
No, The bones had this kind of ratio but not the diet , this cant be inferred.
(E) The process of fossilization altered the ratio of strontium to calcium in the bones of both A. robustus and H. erectus.
No, nowhere the question talks about it.
IMO A
(A) The diet of A. robustus included at least some meat.
YES, we know that :
The A. robustus bones contained a lower ratio of strontium to calcium than did the erectus bones this implies they ate more meat that did erectus --> and if erectus had meat in there diet then A. robustus must have some meat in their diet too.
(B) The meat in the diet of H. erectus was higher in strontium than was the meat in the diets of other hominids.
No , we do not know abut all other hominids
(C) The diet of H. erectus was richer in calcium than was the diet of A. robustus.
No, we just know if it was rich in meat, nothing about calcium in the diet is given.
(D) The diets of A. robustus and H. erectus both contained less strontium than calcium.
No, The bones had this kind of ratio but not the diet , this cant be inferred.
(E) The process of fossilization altered the ratio of strontium to calcium in the bones of both A. robustus and H. erectus.
No, nowhere the question talks about it.
23 Mar 2022, 08:20
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Fossilized bones from the hominids Australopithecus robustus and Homo erectus were chemically analyzed. The robustus bones contained a lower ratio of strontium to calcium than did the erectus bones. The lower the ratio of strontium to calcium in fossilized hominid bones, the more meat the hominid had in its diet. H. erecrus is known to have eaten meat.
The statements above, if true, most strongly support which one of the following?
Ratios are tricky and finer aspects of ratios are tested in options of such questions.
(A) The diet of A. robustus included at least some meat. - CORRECT. Definitely since HE had meat in its diet.
(B) The meat in the diet of H. erectus was higher in strontium than was the meat in the diets of other hominids. - WRONG. Logical opposite can also be true i.e. lower calcium.
(C) The diet of H. erectus was richer in calcium than was the diet of A. robustus. - WRONG. Again it's ratios in play. May or may not be the case.
(D) The diets of A. robustus and H. erectus both contained less strontium than calcium. - WRONG. Just like, B and C this is also wrong.
(E) The process of fossilization altered the ratio of strontium to calcium in the bones of both A. robustus and H. erectus. - WRONG. Can't be strongly supported.
Answer A.
The statements above, if true, most strongly support which one of the following?
Ratios are tricky and finer aspects of ratios are tested in options of such questions.
(A) The diet of A. robustus included at least some meat. - CORRECT. Definitely since HE had meat in its diet.
(B) The meat in the diet of H. erectus was higher in strontium than was the meat in the diets of other hominids. - WRONG. Logical opposite can also be true i.e. lower calcium.
(C) The diet of H. erectus was richer in calcium than was the diet of A. robustus. - WRONG. Again it's ratios in play. May or may not be the case.
(D) The diets of A. robustus and H. erectus both contained less strontium than calcium. - WRONG. Just like, B and C this is also wrong.
(E) The process of fossilization altered the ratio of strontium to calcium in the bones of both A. robustus and H. erectus. - WRONG. Can't be strongly supported.
Answer A.
