Answer:
Option A
Explanation:
Option A shows the smallest building block of a living cell.
Answer:
PRECISSION
Explanation:
The movement of the Earth's axis is called precession.
This movement is caused by the gravitational attraction of the Sun and the Moon on Earth.
Near the year 130 B.C. Hipparchus was the first to estimate the precision of this axis, whose period is about 26,000 years.
Without the primary consumers there would be no source of energy for carnivores or secondary consumers so no secondary consumers would exist in that ecosystem
Water is less dense as a solid than as a liquid. Normally this is reversed. Water has its maximum density at 4 degrees Celcius.
The fact that ice is less dense than water allows it to float on top of ponds so fish, frogs, etc can survive winters.