Identify, and briefly explain, two key elements needed for fossilization.

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When plant or animals after being alive are preserved in sedimentary rocksis called "taphonomy" or fossilization; when they die in a watery environment, and after soft tissues are decomposed, the hard body parts such as shells and bones are turned into a mold when the sediments harden over time.

High pressure is key to generate the mineralization.

Anoxic preservation is also key, which is the condition of being shielded and safe from oxygen to avoid erosion or corrosion.

And of course, the entity must contain hard body parts that could linger over time.

Explanation:

answer: h+ its less than oh

explanation:

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o