4. To describe evolution as a "scientific theory" means that __ Do It is a matter of opinion Do It is a model that is supported by many observations and much experimental E evidence D4 It is an untested idea E D Itis not factual

## Step 1<br />The term "scientific theory" in the context of biology refers to a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation.<br /><br />## Step 2<br />The statement "It is a matter of opinion" is incorrect because scientific theories are not based on opinions but on empirical evidence and scientific reasoning.<br /><br />## Step 3<br />The statement "It is a model that is supported by many observations and much experimental evidence" is correct. This is the definition of a scientific theory. The theory of evolution, for example, is supported by a vast body of evidence from various fields such as genetics, paleontology, comparative anatomy, and biogeography.<br /><br />## Step 4<br />The statement "It is an untested idea" is incorrect. A scientific theory is not an untested idea; it is a well-tested concept that has withstood scrutiny and testing.<br /><br />## Step 5<br />The statement "It is not factual" is incorrect. A scientific theory is based on facts. It is a factual explanation of the natural world that is supported by evidence.