A. signaling cell b. ligand c. receptor d. responding cell in communication between cells, the produces the signaling molecule, also known as the ; the produces the to which the signaling molecule binds.

Answer      A, B, D, C

Explanation:

This process is known as cell signalling.

The interaction of the cells with their environment and other cells around them is cell signalling.

There are four basic categories in multicellular organisms, these are

* autocrine signalling

* endocrine signalling

* paracrine signalling

*signalling by direct contact.

events in order:

1.       vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar   shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone  

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.