Plants can grow in different types of soil. Which of these are both types of soil?
A chalky and clay
B chalky and nitrate
C clay and calcium
D magnesium and sandy

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

Why does a cake rise when you bake it? ♡

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )