Scientists found a strange blob, buried under lots of dirt and rock. They had to decide whether this blob is a living or nonliving thing. What would be a good way to find out?
Melt it and see if it goes through a physical or chemical change
Test it in a lab to find out what atoms it is made of
Look at it under a microscope and look for cells
Poke at it with a stick to see if it moves

Look at it under a microscope and look for cells

Explanation:

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: