In 1957, the russians launched the first successful orbiting satellite, called sputnik. which of these statements best explains why humans should continue to send orbiting satellites to space? question 12 options: 1) they reflect hamful radiations in space.2) they provide useful information about space.3) they change weather conditions on earth.4) they stop comets and asteroids from striking earth.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.