What is the global weather phenomenon characterized by unusually warm ocean temperatures in the equatorial pacific?
a) tsunami
b) photosynthesis
c) la niña
d) el niño

D) El Nino

Explanation:

Condition for El Nino effect:

In the central and eastern equatorial pacific sea surface, the sun makes the water hot, especially on the surface of the ocean.Usually, trade winds push the warm surface water from South-America to the westward towards Indonesia.This process lets the cooler water rise towards the surface of the ocean near south-America. Where ever the surface of the ocean is hot more clouds form and naturally more rain falls in that part of the world.

This is true. The balance of such abiotic factors as water, temperature, light and air composition are crucial to any ecosystem.

Water- all living beings, whether they are plants or animals need a definite percentage of water to live and remain healthy. Water bodies of the world have more life forms present in them than found on land.

Temperature- All plant and animals are adapted to survive  between a minimum and maximum range of temperature. Distribution of different temperatures in different zones enable a wide diversity of both plant and animal life to flourish.

Light- This is the main source of energy for organisms. Most plants use light energy and transform it into chemical energy in form of complex materials that are the lifeline of animals. Animals directly or indirectly depend on plants for life.

Chemical components.- Carbon, oxygen, hydrogen and nitrogen are elements that constitute 97% of the molecules of life. A balanced supply of the elements either from the air in atmosphere or other sources is vital to life of living beings.