Je parle français Pouvez vous m'aider avec ce numéro svp Quelles sont les conséquences les plus graves des problèmes environnementaux en Haïti (7 lignes minimum svp)

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

What is a problem natives in both bolivia and peru face? a. extreme poverty c. discrimination b. limited access to resources d. all of the above

Fossils of glossopteris, an extinct fern, were discovered on which continents to support the theory of continental drift? check all that apply.