Answer:
In a strict evolutionary sense, all tetrapods are essentially “limbed fish,” because their ultimate vertebrate ancestor is a fish. All tetrapods share a variety of morphological features.
Answer:agrarian society- dependent on agriculture
Modern society-dependent on manufacturing sector for income
Hunter-gather society-dependent on wild plants and animals for their sustenance
Explanation:
Answer:
C) II and III only
Explanation:
Option 1 is not an example of phenotypic plasticity because each person is born with their own blood type and this doesn't change based on their environment and behavior.
Option 2 is an example of phenotypic plasticity because a person's red blood cell counts can increase based on their environment, i.e. moving to Denver, CO from Death Valley, CA. The higher elevation and decreased oxygen causes your body to produce more red blood cells.
Option 3 is an example of phenotypic plasticity because one twin can be taller than another because of differing behaviors, environments, etc.
A satellite in a polar orbit passes over both poles, but the earth rotates beneath it. The time taken for each orbit of the earth depends on the height of the satellite. If the satellite is in a circular orbit 260 kilometers above the surface it will have an orbital period of two hours.
