Minerals in surface rock studied by the martian rovers seem to tell us that (a) they formed in water; (b) they were formed by impacts; (c) they hold fossil evidence of life.

Minerals in surface rock studied by the martian rovers seem to tell us that they formed in water.

Option: A

Explanation:

Martian rovers were sent by NASA into the space for searching evidence of life in other planet. It also studied minerals in rock surface. Minerals are part of rock. Minerals are found on the earth surface in great quantity. For e.g. iron, silicate, magnesium, aluminum etc.

After volcanic eruption when it is cooled down it get affected by water activity. That's why its soft in nature and carried the evidence of past life, cementation and water mark. This soft natured rocks are called sedimentary rock.

acts of terrorism occur globally. the united nations global counter-terrorism strategy was created in order to build adequate systems of support and solidarity with victims of terrorism. here´s a summary of the proposed key themes: the importance of giving victims a face and a voice; protecting their dignity; giving victims legal status and defending their legal rights; providing victims with medical, psycho-social and financial support; building solidarity with victims; improving media coverage of victims; and focusing on the link between victims and counter-terrorism efforts more generally.