Please Help me I will give out extra points Your teacher gives you a task in science class. You must decide which of the five samples you are given are alive or were once alive. One specimen is a crusty gray-green object. What is the BEST clue you could use to decide: living thing or not a living thing? A) Does it move? B) Does it have DNA? C) Is it made of cells? D) Can it make its own food?

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?