1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexgriva [62]
3 years ago
6

The ___ is the main organ of the circulatory system.

Biology
2 answers:
alexdok [17]3 years ago
6 0
The *heart* is the main organ of the circulatory system.
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
podryga [215]3 years ago
5 0

It's probably the heart.

Note that there are actually three "main" organs in the circulatory system, the heart, lungs, and arteries, veins, e.t.c.

You might be interested in
Give an example of two types of cells that never go through cell division once fully formed.
AnnyKZ [126]

Answer:

The two types of cells that never go through cell division once fully formed are nerve cells and muscle cells.

Explanation:

The nerve cells and the muscle cells not undergo cell division after formation, because they can never re grow or cannot be repaired once they are mature. We should take good care of it once they are matured. They just under division from being baby to teenagers after that they stop undergoing cell division. This is true for both elephants as well as human beings. This thing is also applicable in case of bones.

5 0
4 years ago
Why do fruits have a hard endosperm?(1)
Fiesta28 [93]

Answer:

ion know

Explanation:

7 0
3 years ago
What type of plants can reproduce through seeds?​
valentinak56 [21]

Most plants grow from seeds. These seed plants fall into two groups, <u>angiosperms</u> and <u>gymnosperms</u>.

hope this helps ^^

5 0
3 years ago
Give an example of each kingdom; provide the following things: cell type, cell structure, (anything unique in the cell wall, chl
nataly862011 [7]
Plantae: Autotrophic, Multi- or Monocellular, have cell walls as well as a membrane, have a chloroplast making the characteristic green color and to capture sunlight for photosynthesis. Break down generated glucose into it's components.

Animalia: Heterotrophic, Multi- or Monocellular, have a cell membrane made of a phospholipid bilayer, and many mitochondria to aid with movement energy. Feed on plants or other animals. Eukaryotic cells.

Fungi: Heterotrophic, most Multicellular, have a rigid cell wall made of chitin, specialized cells to aid with decomposition of dead organic matter. Eukaryotic cells.

Protista: Can be plant-like, animal-like, or fungus-like. Most are single-celled, may be chemosynthetic or photosynthetic. Eukaryotic cells.

Archeabacteria: Prokaryotic. Do not have nuclei or membrane-bound organelles. Move around using a flagellum to propel itself. Lives in mainly fluid environments (air, water). Separated from Eubacteria due to it's high tolerance of extreme conditions, such as high salinity, no oxygen, burning heat, or freezing cold. Can be chemosynthetic or anaerobic, as well as aerobic.

Eubacteria: Normal, everyday bacteria. Prokaryotic, chemosynthetic, anaerobic, or aerobic. Do not have nuclei or membrane-bound organelles. Mobile using a flagellum to propel itself.
7 0
3 years ago
How temperature affect rate of transpiration?
sesenic [268]

Answer:

ufohihyyoyoyodyfydydydu

Explanation:

nvkuuvgjmsnd

8 0
3 years ago
Other questions:
  • Which of the following is a unit of measurement in the metric system?
    9·2 answers
  • Fire algae are known as dinoflagellates because _____. they are from the dinosaur era they cause red tides they have two flagell
    14·2 answers
  • Please hurry it’s urgent
    8·1 answer
  • In an ecosystem, organisms can be divided into producers and consumers. Producers are organisms that use sunlight directly for f
    10·1 answer
  • PLEASE ANSWER FOR BRAINLIEST!
    5·1 answer
  • Which of the following routinely occurs in both eukaryotic and prokaryotic transcription?a. the RNA polymerase undergoes abortiv
    11·1 answer
  • What is the original source of almost all energy in most ecosystems
    5·1 answer
  • What contributed to the failed Mongol invasions of Japan?
    12·2 answers
  • The process of natural selection relies on variation within a population or species and occurs when -
    11·1 answer
  • Describe the three types of fossil fuels. Be sure to give an example of how each is used, the state of matter of each, and how e
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!