Restriction enzyme cuts samples of DNA at restriction site; produces different lengths of DNA segments
You forgot to include the following choices but no worries I did this question before and the answers are:
advances in technology
increases understanding on environment
etc
whenever humans exhale carbon dioxide, plants take it in and use it to make a mixture of sunlight and water to create nutrients for itself. Once it creates the nutrients it releases oxygen which us humans use to breathe. This operation is called photosynthesis.
Gravity is pulling her towards the ground but also forward as the child is on a slope. Friction is pulling against the child as the slide pulls against her.