Sorry if I’m wrong but I believe it’s the cardiovascular and lymphatic system
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Answer:
Explanation: They are not producers because they do not make their own food from the sun, the organisms that can make their own food from the sun are called or can be called autotrophs. The rabbits, Lions, Bears, etc, are heterotrophs
Since more than ten years ago, some authors have argued that there is a so-called "replication (or reproducibility) crisis" in a number of disciplines, including the biomedical, behavioral, and social sciences, due to the inability to replicate findings in those fields. There are studies that look at a wide range of aspects of the reproducibility of science evidence, including definitions of reproducibility,
journals published concerns about reproducibility in the scientific literature and the public press, variables involved in assessing the success of efforts to reproduce a study, suggested factors responsible for reproducibility failures, types of validity of experimental studies, threats to validity as they relate to reproducibility, and experimental studies that are more likely to be valid than others.
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Scientists use all kinds of evidence in order to make sure that their claims are true.