Answer:
pretty sure its Scientific laws are statements about observed experimental facts, while theories are explanations of natural phenomena.
Answer:
Periodicity is caused by regular and predictable variations in element atomic structure. ... The rows in the periodic table (the periods) reflect the filling of electrons shells around the nucleus, so when a new row begins, the elements stack on top of each other with similar please help me rank up
1. Present or threatened destruction, modification, or curtailment of its habitat or range
2. Over-utilization of the species for commercial,recreational, scientific, or educational purposes
3. Inadequacy of existing regulatory mechanisms
4. Disease
5. Other natural or man-made factors affecting its continues existence
I'm so sorry I took long, I'm answering answer after answer :)
Not sure if this is helpful :)
I know these are things in order for an animal to be endangered, but just pick answer that's not these I guess? "Which of the following"
Halogen group 7
noble gases group 8 or 0
transition metals between group 2 and 3
alkali metals group1