D a medium sized star because the largest star is canis majoris and the smallest star is brown dwarf..☺
Since Science is all about experiment and reasoning, ' Which kind of milk tastes the best?' and ' Is it ethical to raise cows to produce milk?' - these two questions cannot be answered through science.
<h3>What Is Science?</h3>
- Science is a methodical endeavor that creates and arranges knowledge in the form of universe-related explanations and predictions that can be put to the test. Some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old, and science may be as old as the human species.
- Society values science because it may be used to better living conditions and meet a wide range of fundamental human needs. Just two current examples include the search for a cancer cure and a clean source of energy.
To know more about Science please click here : brainly.com/question/17216882
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Answer:
im not sure but i think its A
Explanation:
Taxonomy used to have two groups of vertebrates and invertebrates. But invertebrates are far more diverse when it comes to the phylogenetic tree. Vertebrates all share same characteristic which is a back bone made of vertebrae, but invertebrates don’t share a common anatomical structure that all have; they are radically different in structure so they can’t be grouped in a single group. You have Arthropoda, which all have jointed limbs and segmented bodies and molt their cuticles. There’s Cnidaria, which most have tentacles and nematocysts and are radially symmetrical. And Mollusca, which have a muscular foot and a part of their body called a mantle. All these groups are invertebrates, but there’s nothing they share in common WITHOUT referring to the fact that they don’t have vertebrae. So basically that’s just an example why they can’t be grouped into one category; they all have different characteristics and are placed in different areas of the animal kingdom’s phylogenetic tree. Hope this helps
