8. Which of these is NOT a feature of a terrestrial planet (as compared to the Jovian
planets)?
a. Dense
b. Slow rotation
c. Few satellites
d. Planetary rings
9
In total

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

The answer is the first option just took the test

It idk haha what are we doing?

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.