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.

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

The diagram below represents a marine food web and a process that can harm the human population. each circle represents an organism and the smaller dots inside them represent a toxic substance. what is being represented and how does it harm the population? the diagram represents biological half-life, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents biomagnification, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents the process by which different organisms prey upon each other; this can impact the human population by reducing the number of organisms that do not contain the toxin. the diagram represents the way that toxins are metabolized by living organisms, with those at greater trophic levels able to metabolize more efficiently than those at lower levels. this means that those at higher tropic levels are safer for humans to consume compared to the organisms at lower trophic levels.

Compare the composition of the moon's surface with the composition of the earth's surface.