Answer:
The same person before to blood if you have a brother and sister to sure when people have blood it's hard for its .
NH3 since they are both non metals
Answer:C
I don't know what you the answers provided are if you can comment i'll be glad to help you :)
They are all rock with different size and shapes and are located in different areas possibly in the same areas but they all have there own unique textures from the photographs and 3 of them look like maybe a fossil of some type of when the dinosaurs where still around and the rocks on the top left corner look smooth and are a small type of igneous rocks. That have been soothed over the years.
