Answer:
Either (1.) Fossils or (2) Radiometric dating.
Explanation:
Fossils are an obvious answer to this, but radiometric dating is the method most scientists use to find the age of rocks. Radioactive isotopes break down predictably, so the farther along this process is, the older the rock is.
Most reasonable answer is the swallowable camera one. mris and cat scans were invented in the 70s and the rest of the answers are around the 1800s or before.
Photosynthesis is when a plant converts sunlight into energy, and cellular respiration is when cells convert food into energy.
Answer:
i think it may be 50 dont be mad if im wrong
Explanation:
recessive takes over from what i read i dont see any o so it can be half a half b so 50...
