Explanation

A thermodynamically spontaneous reaction occurs without the need for external energy input under given conditions, meaning it has a negative Gibbs free energy (ΔG < 0).

Explanation

Natural resistance refers to an organism's inherent ability to resist diseases or pests due to genetic factors.

Explanation

The aorta is the largest artery of the body and carries blood from the heart to the circulatory system.

Explanation

The mass extinction event that led to the demise of dinosaurs occurred at the end of the Cretaceous period, approximately 66 million years ago.

Explanation

Rabbits are members of the order Lagomorpha, which also includes hares and pikas. 

Explanation

The lineage of reptiles that includes dinosaurs is now extinct.

Dinosaurs were a diverse group of reptiles that dominated terrestrial ecosystems during the Mesozoic Era.

They went extinct around 66 million years ago at the end of the Cretaceous Period

Explanation

Crocodilians are thecodont. Thecodont is a type of dentition where teeth are set in sockets in the jawbone. 

Explanation

When an animal orients itself in response to an abiotic factor (such as light, temperature, or gravity), this behavior is referred to as taxis.

Explanation

Divergent evolution occurs when two species that share a common ancestor evolve different traits or characteristics over time due to adapting to different environments or ecological niches.

This process leads to increased differences between the species.

Explanation

Capacitation is the physiological process that sperm must undergo to gain the ability to penetrate and fertilize an egg.

This process occurs after the sperm enters the female reproductive tract

They involve a series of biochemical changes that enhance the sperm's motility, and its ability to bind to the egg.

It is distinct from spermiogenesis (the final stage of sperm development), the acrosome reaction (which occurs later during fertilization), and fertilization itself