The building blocks of a habitat consist of ENVIRONMENTAL factors.
Answer: soil tests are most useful during the growing season to monitor plant nutrient uptake.
Explanation:
0% because if straight hairline is recessive that means it would need 2. Since, Widows peak seems to be dominant, then there would need to be at least 1 dominant. But, there are both people that have recessive traits.
Answer: Lungs
Explanation: The pleura encloses each lung by a double layered serous membrane