Nadia is digging a hole in her backyard to plant a new tree. As Nadia is digging, she notices that there is only a six-centimeter layer of soil, but then it turns to mostly clay and becomes more difficult to dig. She notices that there are many different types of small insects living in the layer but almost nothing living in the clay layer. She tests the pH of the
soil to ensure that the tree will survive and notes that the pH is 6.7.
If Nadia kept digging deeper in her backyard, which type of soil would she eventually encounter?
bedrock fragments
humus layer
subsoil
topol

Which situation would most likely result in evolution? question 2 options: an alligator has no alleles for scales. a large population loses a few individuals. a single individual joins a large population. a predator prefers one phenotype to another.

How do living things obtain phosphorus

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.