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Nikolay [14]
3 years ago
8

In vertebrates, chemical messengers called hormones are secreted by the _____ system. endocrine excretory hormonal pituitary

Biology
2 answers:
____ [38]3 years ago
8 0
The correct answer should be the endocrine system.

Hormones are secreted by endocrine glands in endocrine systems. Opposite of this would be the exocrine system consisting of exocrine glands.
MakcuM [25]3 years ago
8 0

The correct answer is endocrine system.

Endocrine system in vertebrates consists of endocrine glands. Endocrine glands do not have ducts thus, they are also called as ductless glands. The glands which secretes enzymes are glands with duct, called exocrine glands.    Therefore, the hormones secreted from endocrine glands are directly poured into the blood for the action on target organs. Examples of endocrine glands are pituitary gland, thyroid gland, adrenal gland.  

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The Marianas trench contains Challenger Deep, the deepest point in the ocean floor that we know of today. Challenger Deep is loc
ArbitrLikvidat [17]

Answer:

Above the floor of challenger deep, the ocean zone located would be the <u>Hadal zone .</u>

Explanation:-

<u>THE CHALLENGER DEEP </u>-  The deepest location in the ocean is the Challenger Deep, at the southern end of the Mariana Trench (sometimes called the Marianas Trench). It is difficult to measure its depth from the surface, but modern estimates vary from 305 meters (less than 1,000 feet). The Challenger Deep 's great depth is due to the successful steepening of the subducting slab along a region of poor link with the overriding plate tearing away from the northern part of the Mariana Trench in the southern part of the Mariana Trench.

<u>THE HADAL ZONE </u>-: The Hadal zone (named in Greek mythology after the domain of Hades, the underworld),, is the ocean's deepest area lying within oceanic trenches. The hadal zone is located at a depth of about 6,000 to 11,000 meters (20,000 to 36,000 feet) and is present in long but narrow V-shaped topographic depressions.

Hence, the answer is Hadal zone ,which is located just above the floor of Challenger Deep.

4 0
3 years ago
A group of atoms bonded together is a molecule. <br><br> A. True<br> B. False
navik [9.2K]

Answer:

A true is your answer

Explanation:

4 0
3 years ago
Read 2 more answers
Which contribution to the body of scientific knowledge is most recent?
xxMikexx [17]

Answer:

Hi there!

Your answer is B. The discovery of the DNA structure

Explanation:

In 1953 James Watson and Francis Crick discovered the double helix structure to DNA!

4 0
4 years ago
Read 2 more answers
Redox reactions refer to a pair of reactions in which a particular oxidation is coupled to a corresponding reduction. Although n
Bad White [126]

Answer:

The Equations sort each listed half reaction as either an oxidation or a reduction.

Fe + CuSO4 + → FeSO4 + Cu

(Fe oxidized, Cu reduced)

Explanation:

For proper understanding of the concept of the Redox reaction, let us know the meaning:

Reduction- Oxidation or "redox" reactions occur when elements in a chemical reaction gain or lose electrons. This reaction causes an increase or decrease in oxidation numbers. The Half Equation Method is used to balance these reactions. The equation is separated into two half-equations, one for oxidation and one for reduction. For Example -

CuO + H2 → Cu +H2O.

In this redox reaction, CuO is getting reduced to Cu since Oxygen is getting removed.

Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s) Oxidation state of Fe changes from 0 to +2 and oxidation state of Cu changes from +2 to 0.

6 0
3 years ago
Which statement best describes the arrangement of silicon-oxygen tetrahedra in clay minerals?
SCORPION-xisa [38]

Sheets

Explanation:

Silicon - oxygen tetrahedra in clay minerals are arranged in form of sheets. In clay minerals the silica tetrahedra is classified as a sheet silicate.

  • The layers are arranged on top of one another like leaves of books.
  • There are different arrangement of silicate structures in different minerals.
  • In some minerals like quartz, they are interlocked forming a framework pattern.
  • Examples of clay minerals are phlogopite, montmorilloinite, e.t.c

Learn more:

Silicate minerals brainly.com/question/4772323

#learnwithBrainly

6 0
4 years ago
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