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
slavikrds [6]
2 years ago
15

Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone. Which organ system do blo

od cells and blood vessels belong to? A. circulatory system B. nervous system C. respiratory system D. skeletal system ​
Biology
1 answer:
Marizza181 [45]2 years ago
4 0

Answer:

A. Circulatory system

Explanation:

Circulatory system consist of heart,blood cells&blood vessels

You might be interested in
Julie wrote down the list below of the reasons why she thinks that humans should stop relying on fossil fuels.
forsale [732]

Julie listed out fossil fuels are a non-renewable source of energy and Fossil fuels are becoming more expensive.

Option C

<h3><u>Explanation:</u></h3>

Fossil fuels are defined as the type of non renewable energy which is formed as a result of dead and decaying organic matter over thousands of years under pressure and temperature of Earth’s core.

This type of fuels are formed due to the dumping of dead prehistoric organisms like dinosaur and others under the soil under a tremendous pressure and very high temperature, where they are acted upon by bacteria and other chemicals to reduce them into petroleum and coal. These are totally non renewable and they are getting expensive over days due to shortage of availability.  

3 0
3 years ago
What is diploid? explain it​
butalik [34]

Answer:

Is a cell containing two complete sets of chromosomes one from each parent

3 0
3 years ago
Read 2 more answers
HUISWELLICH
drek231 [11]

Answer:

Nitrogen is an important nutrient for all plant cells, and it is component of the chlorophyll  found in leaves. Which of the following statements best describes how nitrogen is absorbed  and distributed to the leaves of the plant so that photosynthesis can take place?

Nitrogen is absorbed by the roots and distributed upwards through the xylem

Explanation:

Nitrogen are gotten from the ground by the plants before it is transported through xylem to the stem and then the leaves

4 0
2 years ago
Which one is organ????
Flauer [41]
I think is the letter, S
3 0
2 years ago
Read 2 more answers
A plant can be classified in more than one category. True False
Slav-nsk [51]

Answer:

true

Explanation:

theres a bunch of different categories depending on the subject

4 0
3 years ago
Other questions:
  • How do you make babies
    12·2 answers
  • Why is runoff in rivers and the ocean such a serious problem?
    11·2 answers
  • What are 4 biotic facts about the tundra??
    9·2 answers
  • If a drug that was an inhibitor of PP1 activity was ingested by a person
    5·1 answer
  • Two reasons why are people hesitant to report corruption
    6·1 answer
  • During exercise, when muscle cells runs out of oxygen, _________builds up in muscles, causing a painful burning sensation
    15·1 answer
  • 3 questions, I really need help.
    5·1 answer
  • Which part of the membrane helps chemical reactions happen?
    10·2 answers
  • What muscle covers the ventral, pectoral region?<br> For rats
    7·1 answer
  • Autoimmune diseases are an example of a(n) ________ response by the immune system.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!