Pls help (Antartica poaster)

What does Antarctica have to offer tourists?
What activities can tourist expect to experience whilst in Antarctica?
What can tourists expect to see whilst they are in Antarctica?
What should tourists take with them (clothing)?
What rules should tourist stick to?​

Which of the layers of the earth has the following three characteristics? i. it is made of molten rock. ii. it has currents that are constantly moving. iii. earth’s plates float on top of its currents.

Ageologist is working in an area with exposed sedimentary rocks and finds a well exposed sequence of stratified rocks. as he works through a thick sequence of limestone, he sees abundant large clam fossils that produce an interlocking texture suggesting a reef, but within the limestone section these clams disappear and the overlying limestone is made up primarily of fragments of corals. he now moves 50 km away and finds limestones interbedded with shales, and the limestones contain the same clam fossils he had seen previously 50 km away. as he continues through this section, the rocks become entirely limestone, and the clams disappear again with coral fossils above forming a reef structure. he concludes

Plz 100 ! if changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. oxygen level in water is therefore a(n) with respect to the number of trout that a particular stream can support.