1 2 Cloning: Advantages: 1. can help some women have babies 2. can help medical research Disadvantages: 1. it is not natural to make people 2. dangerous;
Nonrenewable Energy. Fossil Fuels (coal, oil, natural gas) Fossil fuels account for 90% of energy used in developed countries. By 2050, world energy.
What is Energy? Energy is the ability to do work.
What is a fossil? 1. Organisms die 2. Their remains were covered with sand, soil, and other sediments. 3. These sediments harden over and around the organism’s.
