Why do you think that radio receivers, such as the arecibo radio telescope, the very large array (27 individual radio telescopes in new mexico), and the linked global system of radio receivers (from hawaii to the virgin islands in the caribbean) have such large diameters?

Each autumn the forest floor is covered by leaves that have fallen from trees which type of organisms is most effective in decomposing the leaf tissue allowing the nutrients and minerals to be recycled in the environment?

Which amusement park ride utilizes periodic motion a.slide b.bumper cars c.giant swing d.roller coaster

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii