Some of the negative effect of immigration are
1. Overcrowding ( could increase cost of housing)
2.increasing cost of services such as health care and education
3. Disagreement between different religions and cultures
4. It might stimulate capital formation and increase the level of *brain gain*.
5. Potential fall in real wages,especially for low skilled workers.
I hope this helps
Answer is B and D are the best answers
According to researchers, this theory is believed to have started 4.6 billion years ago. However much we shed light on theories that took place up to 3 billion years ago, the plate tectonic theory is not suffient enough to explain the earth's and crust formation before 1 to 3 billions years ago through to the earliest formation of planet 4.6 billion years ago. The difference with these numbers are big and it is simply hard to find well-preserved ancient rocks
Gravitational potential- a raised weight
chemical potential - dinamite
elastic potential- an archers stretched bow
electrical potential- a bowling ball sitting at the top of a tower
radiant- x-rays
thermal- boiling a kettle
sound- vibrating drum
electrical- light emitting light rays
mechanical- a moving car
