Explanation

Parathyroid hormone (PTH) is produced and secreted by the parathyroid glands, which are located behind the thyroid gland in the neck.

PTH regulates blood calcium levels by stimulating"

• bone cells (osteoclasts) to release calcium from bones
• increasing calcium absorption in the intestines
• reducing calcium excretion in the kidneys. 
  

Explanation

The idea that characteristics acquired or lost during an organism's lifetime can be passed down to its descendants was proposed by Jean-Baptiste Lamarck.

This concept is part of Lamarck's theory of inheritance of acquired characteristics.

Explanation

The release of hormones by the pituitary gland is regulated by releasing hormones and inhibiting hormones produced by the hypothalamus.

Specifically, the growth hormone-releasing hormone (GHRH) stimulates the release of growth hormone (GH) from the pituitary, while somatostatin inhibits its release.

Explanation

Carrying capacity refers to the maximum number of individuals of a species that an environment can support over the long term without degrading the environment.

Explanation

If a person is tall, this physical expression is referred to as their phenotype

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

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

Explanation

The estrous cycle is the reproductive cycle observed in many non-human primates.

It involves periods of sexual receptivity (estrus) during which the female is fertile and can conceive

Explanation

In humans, the type of implantation is endometrial implantation,

which occurs when the embryo embeds itself into the lining of the uterus (endometrium).

Explanation

When one harmful species resembles another harmful species, it is known as Müllerian mimicry.

This type of mimicry involves two or more harmful or poisonous species evolving to look alike, reinforcing the avoidance behavior in predators.