Which traits are challenges of life for all organisms? choose all answers that are correct.
a. reproducing
b. getting sunlight
c. hiding or running
d. maintaining structure
e. swimming upstream
f. obtaining energy
g. laying eggs

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

Me the formula cacl2 represents the compound

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes