Answer:
scientific consensus changed as scientists learned more about organisms.
Explanation:
Advancements in DNA technology has now given scientists more powerful and insightful tools to further investigate the relationships amongst organisms.
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A contour interval is the lines on a topographic map that state the height (from sea level) of the hill, valley, mountain or the ground level.
Answer:
The lids of the Petri dishes were inadvertently left on while being sterilized
Explanation:
- The process of eliminating any microbe from a particular object to achieve a sterile aseptic environment is termed as sterilization.
- Sterilization mainly aims to either remove, kill or make any microbe inactive by using various means such as irradiation, heat, pressure, etc.
- In the given question radiation is used to sterilize the Petri dishes and thus, if sterilization is successful there should not be any contamination.
- However, since there is contamination present amongst the bacterial colonies growing on agar plated in the Petri dishes this shows that the sterilization has not been done successfully and a possible reason for this could be that while sterilizing the<em> lids of the Petri dishes were kept on. </em>
B. outer covering
b. it preforms all functions
1 strogon 2 iodine 3 twenty 4 the products 5 ab_ _>a+b