Answer:
The correct answer is single,double and triple covalent bonds .
Explanation:
A carbon atom can form a single bond with another carbon atom example ethane.
A carbon atom can form a double bond with another carbon atom example ethylene
A carbon atom can form a triple bond with another carbon atom example acetylene.
But during the formation of Carbon carbon single bond or double bond or triple bond the valency of carbon atom that is 4 is always maintained.
B - energy flow from one tropic level to the next
Answer: condition intersex
Explanation: what causes this is unknown, it's been linked to manmade, environmental chemicals that block or mimic sex hormones.
The correct answer of the given health question above would be TRUE. It is true that hemodialysis can only be <span>performed in an inpatient setting. Hemodialysis is a therapy that uses a machine or dialyzer in order to filter or remove wastes from the blood such as urea. It can only be done either in a hospital or a dialysis center. Hope this answer helps.</span>
