Why do adaptations and variations occur?

Variations happen because living things are not all the same. Their genes and the environment they live in make them different. These differences make each living things unique.

Adaptations are useful changes that can help living things survived. For example, animals might grow thicker fur to stay warm. These changes can be passed on to their babies, so their babies can also have a better chance to live and grow.

What are Genetically Modified Organisms and why do they exist?

Reflection- Unit 1 - Change Over Time

Geologic time divides Earth's 4.5-billion-year history into units—eons, eras, periods, epochs, and ages—based on major changes in rocks and fossils. Scientists use rock layers to determine whether a rock is older or younger, helping them find the relative age of fossils. The oldest rock is at the bottom, and the youngest is at the top. These ideas are part of the principles of relative-age dating.

Experimentation

We experiment to show the proof of genetic variation. 

We measure sunflower seeds 

The formation of fossils.