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
scoray [572]
3 years ago
7

Oxygen and food are delivered to the body's cells by

Biology
1 answer:
DanielleElmas [232]3 years ago
3 0
Circulatory system is the answer
You might be interested in
A student wants to determine if exercise helps one to learn better. She conducts an experiment where 10 people start an exercise
VMariaS [17]

Answer:

Independent variable: exercise

Dependent variable: grades

Constants: same kind of exercise, same set of students

Yes, there is a control group. The control group are the 10 people that do not exercise

Explanation:

In an experiment, the independent variable is that variable that the experimenter changes or manipulates. In this case, the independent variable is the EXERCISE.

The dependent variable is the variable that responds to changes made to the independent variable or the variable that the experimenter measures. In this case, the dependent variable is the GRADE of the people.

The constant is the variable that the experimenter must keep constant or unchanged throughout the experiment. In this experiment, the constants are the same kind of exercise, same set of people used.

In this experiment, there is a CONTROL GROUP. The control group is the group that does not receive the experimental treatment in the experiment. In this case, The control group are the 10 people that do not exercise

5 0
3 years ago
What is the amount of land and water a person uses is considered as ​
azamat
29% land , 71% water
5 0
3 years ago
Which part of the cell does this illustration represent?
Tju [1.3M]

Answer:

Mitochondria

Explanation:

The mitochondrion is an organelle found in both animal and plants cells. However, it is not found in prokaryotic cells. The mitochondrion is most famously known as the powerhouse of the cell because it produces ATP. The defining visual feature of mitochondria is the wavey-like pattern within the organelle.

6 0
3 years ago
(Science) Determine the number of atoms of each element that makes the following compound: CaCl2. Be sure to select zero if an e
elixir [45]

Answer:

Carbon:0

Calcium:1

Chloride:2

Hydrogen:0

Oxygen:0

Explanation:

Ca is calcium and there is only one in the compound due to no subscripts. Cl is chloride with a subscript of 2, meaning there are 2 atoms of that element in this compound.

6 0
3 years ago
The term "genetic code is defined as the sequence of bases in DNA in a cell's nucleus. The types of bases in the genetic code ar
VikaD [51]

Answer:

amino acid because genetic code sequences of bases in DNA

7 0
3 years ago
Other questions:
  • Give the Taxonomic levels of man:
    15·1 answer
  • The body’s nonspecific defenses against invading pathogens include
    13·2 answers
  • Enzymes are substances that speed up the rate of chemical reactions. The rate of enzyme
    7·1 answer
  • Which plasma protein is necessary for the process of blood clotting?
    6·1 answer
  • Which description is a characteristic of r-selection strategy? A. most offspring reach adulthood B. reaches reproductive capabil
    11·1 answer
  • Question 7 of 10
    6·1 answer
  • Plant meristems produce new cells by which of these processes?
    10·1 answer
  • Choose from the following list the three genotypes the parents must have in order for a daughter to have XbXb . XBXB XBXb XY XbX
    13·1 answer
  • Soil forms in _______, which together make up the soil profile.
    7·1 answer
  • Which statements describe thigmotropism? Check all that apply.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!