What knowledge did Darwin’s theory need in order to be tested, which he didn’t have at the time? A. Adaptations
B. Age of the Earth
C. Living organisms
D. Fossils

When water freezes, it . contracts expands

Overtime the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. which of the organisms would most likely survive the change to their environment?

Everything that surrounds a particular organism