PLEASE HURRY Animals respond to external stimuli, such as light, temperature, and danger. Explain what body system is utilized when animals go into fight or flight mode

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1