Answer:
d. soil that is always frozen
Explanation:
Permafrost is the layer of ground that remains frozen the complete year. Soil, rocks and sediments collectively together forms the permafrost. Such soil may remain frozen for a period of two or more than two years. A large part of the Earth's surface has been covered by the layer of permafrost. These are found mainly near the high mountains and especially near North and South poles.
Answer:
A sentence is something that you can type up.
For example: I saw a dog that was hungry and needed something to drink so I took it home gave it some water and some food.
I typed this up and did not look it up.
Explanation:
Density = 7.90 g/cm³
volume = 1.00 cm³
Therefore:
mass = density * volume
mass = 7.90 * 1.00
mass = 7.90 g
Answer:
Explanation:
Overuse of antibiotics leads to bacteria's resistance against our drugs. This is increasing at an alarming rate and the reason is that overuse of antibiotics kills bacteria that lack the "resistance" gene or gene that can help them survive the antibiotics (similar is the case for insects that die to insecticides). But, some bacteria can have random mutations in their gene that can help them survive the antibiotic (similar is the case for some insects that can survive the insecticide), thus the surviving bacteria give rise to next generation of bacteria that are resistant to the given antibiotic (similar to how insects that survive the insecticide give birth to new insects that are resistant to insecticide too). Soon, every generation adds new antibiotic resistant bacteria (or new insecticide resistant insects in the case of insects) which is dangerous for all of life on this planet. Therefore, both are similar in the sense that new generations of these organisms will be resistant to our weapons against them.
D the electrons revolve around the nucleus and they contain negative charge