All of the statements regarding the history of life on Earth are true except: Group of answer choices a) The history of planet Earth includes alternations between colder periods ("icehouses") and warmer period ("greenhouses") on the surface of the planet b) The rise of more complex organisms such as eukaryotes has resulted in a reduction of diversity of more "primitive" organisms such as bacteria. c) There have been repeated incidents of mass extinction in the history of the planet in which species diversity has been reduced by 50% or more d) There is more oxygen in the atmosphere today than there was early in Earth history (4 billion years ago)

the correct answer is A

Explanation:

Option A is the one that is considered false since the warm stages that the earth goes through are called greenhouse stages, but the cold ones are not called in the same way but are called glaciation stages.

heat a spark and oxygen

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.