11. which of the following animals is not a scavenger that gets food from dead plants and animals washed up on the beach?
a) sand hoppers b) plow snails c) sea turtles d) ghost crabs
12. sea turtles are: a) reptiles b) marsupials c) mammals d) amphibians e) skates

11.C

12.A

Explanation:

11.

Scavenger:

 Those animals consumes dead organism is called scavenger.

Among all the given option expect sea turtles all are scavenger.

Sand hoppers eats decaying plant bodies ,plow snails eats the decaying animals and ghost crabs also eat decaying animals and dead matters.

12.

Sea turtles is a reptiles.This also called marine turtles.

the answer is d. made landless peasants that owners of large haciendas

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.