1. <span>Nuclear power does not produce air pollution as other energy sources do.
2. </span><span>Ocean currents bring nutrient-rich water into coastal regions.</span>
Answer:
D
Explanation:
disinfection i think havent really learned this
Tumor-suppresor genes inhibit cell division in the cell-cycle to repair DNA that is damaged or abnormal chromosomes to stop the mutation of such genes which causes pathology in the body.
Answer:
False
Explanation:
Action potential will only be fired when the memebrane potential is above the threshold level.
This follows the all-none -principle.
No matter the strenght of stimulus if the magnitride is not upto the threshold level,No action potential will.be generated.
An example is the flushing of water closet or lavoratory.No mater one tried to flush,if the water in the closet does not fill up to the threshold for flushing,,to propel flushing. not flushing will take place.
Answer:
Fossils are a record of living things preserved in rock layers,
Explanation:
Fossils are the remains or evidence of living things. fossils can be actual preserved organic material ( amber, frozen masadons. ) mineralized bones, and shells, casts, molds, impression of leaves and footprints.
By studying the remains of living things an idea of what the living things were like and some idea of the environment in which they lived.
