Answer:
Seafloor spreading helps explain continental drift in the theory of plate tectonics. ... Plates that are not subducting are driven by gravity sliding off the elevated mid-ocean ridges a process called ridge push. At a spreading center, basaltic magma rises up the fractures and cools on the ocean floor to form new seabed.
Explanation:
Mesquite trees saguaro cactus and octiallia
Before human-made antibiotics, Antibiotic resistant bacteria existed. A good example is a penicillin, it is produced by antibiotic which is made by mold and the mold which makes the antibiotic to kill the bacteria and the one which would compete for material that mold gets its nutrition’s from.
That’s why we can say before humans developed, there were some penicillin-resistant bacteria. Most of the non-resistant bacteria die when exposed to an antibiotic. Some bacteria may have a resistance to the antibiotic because of mutations. Natural selection is all subject to bacteria. Most of them die if they don’t have the mutation which helps them to survive.
If those bacteria are exposed to a various antibiotic, then the same process occurs and that is how most strains of bacteria comes to multi-antibiotic resistant.
Answer:
E. Anther
Explanation:
The main function of the anther of a flower is to produce the pollen of flowering plants. The pollen contained within the anther provides the sperm necessary for reproduction.
Carbon dioxide is removed from the atmosphere primarily through photosynthesis and enters the terrestrial and oceanic biospheres. Carbon dioxide also dissolves directly from the atmosphere into bodies of water (ocean, lakes, etc.), as well as dissolving in precipitation as raindrops fall through the atmosphere.