Which of the following is decayed organic matter in soil? A. humus
B. bedrock
C. clay
D. silt

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland