Explanation

Pathology is the branch of science that focuses on the causes, effects, and nature of diseases in organisms.

It studies both the structure and function of diseased tissues and organs.

Explanation

Instead of nostrils, insects breathe through openings in the thorax and abdomen called spiracles.

Insects that are diapausing or non-mobile have low metabolic rates and need to take in less oxygen.

Insects exchange oxygen and carbon dioxide through spiracles (noted by circle)

Explanation

Charles Darwin's theory of evolution through natural selection explains how the diversity of species on Earth generates itself.

His groundbreaking book, "On the Origin of Species" (1859), introduced the concept of evolution and how species adapt and diversify over time.

Explanation

The Nutrient Cycle is the most natural event in the context of nutrient cycling.

It refers to the continuous process by which nutrients are exchanged between the environment, plants, and animals.

This process includes various events such as primary production, decomposition, and nutrient uptake.

Explanation

The process of applying a zinc coating to iron or steel to prevent rusting is called galvanizing.

This helps protect the metal from corrosion.

Explanation

Nuclear energy is generally considered the strongest type of energy due to its high energy density and release rate.

Nuclear reactions release a vast amount of energy per unit of mass.

This making it a highly concentrated and powerful source of energy.

Explanation

Arthrophytes is an outdated term that refers to a group of ancient plants that are now classified as Sphenopsids.

Sphenopsids are a group of vascular plants that include horsetails and their extinct relatives.

They are characterized by their hollow stems, jointed branches, and spore-producing cones.

Explanation

Erythrocytes, or red blood cells, are responsible for carrying oxygen from the lungs to the body's tissues and carbon dioxide from the tissues to the lungs.

They contain the protein hemoglobin, which binds to oxygen and gives blood its red color.

Explanation

Glucose, a form of sugar, is the primary source of energy for every cell in the body.

Because the brain is so rich in nerve cells, or neurons, it is the most energy-demanding organ, using one-half of all the sugar energy in the body.

Explanation

The weight of an object at the center of the Earth is the same as its weight on the surface.

This might seem counterintuitive, but it's because the gravitational force acting on the object is proportional to the distance from the center of the Earth.

At the center, the distance is zero, but the gravitational force is also zero because the object is surrounded by equal amounts of mass in all directions.