Classification systems are essential to science; they act as the scaffolding that enables scientists to stand up close and get to know plants
A hypothesis is considered scientific if it has something that can be supported or refuted through carefully crafted experimentation or observation
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Answer:
The strengths of a focus group are:
-it gives the moderator more open ideas to work with.
-it has low cost compared to other data methods.
-it speeds up the result collection of the selected topic.
Weaknesses of focus group are:
*It takes effort to assemble the group members.
*Complex data analysis.
*No individual answers.
Explanation:
Focus groups usually involves a number of participants having an open discussion on a specific topic, set by a moderator, usually the person that comes up with the specific topic for focus. The function of a focus group is to collect data through group interactions on a selected topic.
The strengths of a focus group are:
-it gives the moderator more open ideas to work with.
-it has low cost compared to other data methods.
-it speeds up the result collection of the selected topic.
Weaknesses of focus group are:
*It takes effort to assemble the group members.
*Complex data analysis.
*No individual answers.
Answer:
Elliptical galaxies, such as M87 have very little gas and dust. ... Both the largest and the smallest known galaxies are elliptical. Very large elliptical galaxies can reach 300 million light years in diameter. Dwarf ellipticals, which are very common, may contain only 1/100,000th as many stars as the Milky Way!
Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars. The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way.
