Answer:
abiotic factors.
Explanation:
abiotic factors are the non-living parts of the environment that have a major influence on living organisms. The most important abiotic factors include water, sunlight, oxygen, soil and temperature.
These organisms get the food needed to survive by filtering the food from the water with the use of their cells. Some of these organisms feed up with different wastes because that is their food and diet. Others use their sense of smell by detecting their food in order to survive.
Option b. 100+
Some birds are nomadic in winter, others spend the colder months in the southwestern part of the continent or in the Mediterranean region. Geographical conditions determine several main routes. The Alps are an important barrier to migratory birds. About 150 travel westward and southwestward; others travel southeastward.
