Answer:
Gravity
Explanation:
When its altitude is matched by the pull of the Earth's gravity, a satellite circles Earth. The satellite will fly off into orbit in a straight line or crash down to Earth without this equilibrium.
By juggling two things, a satellite retains its orbit: its velocity (the speed it takes to travel along a straight line) and the gravitational force on it that the Planet provides. To resist the greater gravitational force, a spacecraft orbiting closer to the Earth needs more velocity.
Answer is that it’s a base
The answer is behavioral isolation.
Reproductional isolation is a way to prevent closely related species to mate each other. This is due to reproductive barriers which can be either prezygotic (before fertilization) and postzygotic (after fertilization) barrier. Behavioral isolation is an example of postzygotic barrier. It is based on behavior, including mating sounds and rituals. Thanks to behavior isolation, the different species (in this example gentoo penguins and emperor penguins) will have different mating rituals so they could attract only individuals of their own species, respectively.
Answer:
Mechanical digestion
Chemical digestion
Explanation:
Food is physically broken into smaller parts. For instance, by chewing.
Food is broken down by acids and enzymes into its basic units.
Answer:
Transmission electron microscope is the best one due to high magnification power.
Explanation:
Micrographs or photograph obtained from the optical microscope is not very clear because it has the magnification power up to 1000x while the scanning electron microscope has magnification power 30000x which is quiet higher than optical microscope so the micrographs is better than optical microscope and gives more information about the specimen, and the transmission electron microscope has the magnification power up to 500000x which has the highest of magnification so the micrographs obtained from this microscope is the best due to more information about the size and structure of the specimen.