Prolactin (PRL) is a pituitary hormone that regulates milk production in lactating mammals.

What problem is faced by organisms that live in fresh water?

g100num [7]

Fresh water is any body of water with a low salt concentration. Organisms in fresh water various challenges which includes; Osmotic concentration such that fresh water is permanently dilute and most cells cannot function at this concentration of ions. Varying temperatures, variation in oxygen levels and reproduction and life cycle due to permanence of habitat and physiological difficulty of regulating osmotic concentration in larvae and juveniles.

6 0

3 years ago

What have researchers concluded from the fossil remains of hominin feet from south africa?

Fynjy0 [20]

<span>They indicate many forms of hominins spent considerable time in trees.</span>

8 0

3 years ago

A bald eagle and a black bear both have four limbs with digits because they are both tetrapods, descendants of a four-limbed anc

Lisa [10]

The bald eagle and the black bear are tetrapods, which means that they both have four limbs along with the digits. This shows that they both are the descendants of the four-limbed ancestors. However, the limbs of the bear and the bald eagle have different functions. The forelimbs of both these organisms serves different purpose. Hence, their limbs are homologous organs. The homologous organs are those which have the same ancestry but the functions are different.

7 0

3 years ago

Which of the following is a true statement?

Katen [24]

Choice B:
More photosynthesis leads to more oxygen in the atmosphere and oceans.

6 0

3 years ago

On your first research mission you make an amazing discovery by finding a new species living in the hostile environment of the s

Tomtit [17]

The best classification for this new species is Animalia.

According to the six kingdom classification given by Carl Woese, all organisms are divided into 6 kingdoms.

1) Archaebacteria

2) Eubacteria

3) Protista

4) Fungi

5) Plantae

6) Animalia

As the newly discovered species is a multicellular (made up of more than one cell) organism.

Then it can only belong to Kingdom Fungi, Plantae and Animalia as the rest of the kingdoms like Archaebacteria, Eubacteria and Protista consist of unicellular organisms that are made up of only one type of cell.

Now this species is not autotrophic ( i.e. an organism that can get its own nutrition by the use of light, water, carbon dioxide, or other substances).

It means it is heterotrophic which means it can't get nutrition on its own.

Out of the Fungi, Plantae and Animalia , only fungi and Animalia kingdoms consist of heterotrophic organisms.

Now this species also does not contain chitin which is an important characteristics of Fungi.

So only option left is Animalia.

Hence, the best classification for this new species is Animalia.

Learn more about Six kingdom classification here brainly.com/question/14965544

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6 0

2 years ago