Help pls, it's a test about fossils? Looking at the diagram below, how it is known that the environment changed over time?
A. They are all predators.
B. The organisms gradually become herbivores.
C. At some point, the land was covered in water.
D. The organism gradually become simpler beings. ​

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

What is the thermodynamic driving force for dissolving a solid in a liquid if it is an endothermic process (which reduces the entropy of the surroundings)? 1. the combustion of propane. 2. the increase of the entropy of the system. 3. increased temperature of the system and surroundings. 4. the decrease of the entropy of the system. 5. the increase or decrease of the entropy of the system?