Foreshocks and aftershocks can happen at the same time is not true.
Answer:
Changes in environment, food source changes and disease?
Explanation:
I dont know what the answer choices are
Sperm and egg are both sex cells used in sexual reproduction
Answer:
Periods on the periodic table of elements
Explanation:
In the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families. (See also The Periodic Table: Metals, Nonmetals, and Metalloids.) In each period (horizontal row), the atomic numbers increase from left to right.
