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
Andreyy89
3 years ago
6

Please help! 25 points:)

Biology
1 answer:
ladessa [460]3 years ago
6 0

Answer:

D. IV -> III -> II -> I

Explanation:

Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.

You might be interested in
Cuales son la propiedades de la temperatura
Bess [88]

<em>1. sólido, líquido, gas, plasma</em>

<em>2.  volumen, solubilidad, presión de vapor, color o conductividad eléctrica.</em>

<em></em>

<em></em>

<em>cómo ha sido su día?   :)</em>

8 0
3 years ago
Which level of life includes all of the other levels in this list: organisms, cells, biosphere, molecules, ecosystems?
Vladimir79 [104]

Answer:

Biosphere

Explanation:

The biosphere is the part of the earth that supports life forms. It includes hydrosphere, atmosphere, and lithosphere. Various ecosystems, aquatic or terrestrial, are present in the biosphere. Biotic and abiotic components of a geographical region that interact with each other together make an ecosystem.

The biotic component of an ecosystem includes all the organisms present in it. Organisms may be unicellular or multicellular. All the organisms are made up of one or more cells. Cells are made up of various biomolecules that interact and enable cells to perform the life processes.

5 0
3 years ago
Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. Which of the following tasks does she
Gwar [14]

Answer: A. reporting results of scientific analysis.

A physical evidence, also called real evidence. It is a tangiable evidence, which can be touched, picked and collected from the scene of crime or any other place. It can be used to prove a crime has occurred. Physical evidences includes fingerprints, footprints, fibers, paint and building materials.

A specimen sample is taken from the suspects or victims and compared with suspected samples obtained from the scene of crime. The comparitive analysis of physical evidences can be used as a scientific evidence against criminal.

Therefore, reporting results of the scientific analysis is the task she should perform.

3 0
3 years ago
Explain how the vaccine makes someone immune to mumps
slava [35]
A vaccine works by stimulating the immune system to produce antibodies without actually infecting someone with that disease. They trigger the immune system to produce its own antibodies as though the body has been infected with the disease. But a vaccine will not make someone immune to a disease, it will simply help the body be able fight the infection better.
5 0
3 years ago
I NEED HELP WITH THIS QUESTION
Margaret [11]

Answer:

Answer is A

Explanation:

It is rewarding the dog.

8 0
2 years ago
Read 2 more answers
Other questions:
  • Phosphofructokinase is a four-subunit protein with four active sites. phosphofructokinase catalyzes step 3 of glycolysis, conver
    11·1 answer
  • Before DNA replication can take place what has to happen to the DNA?
    9·1 answer
  • In April 2009, a new strain of influenza A emerged. This strain, known as the swine flu, caused at least 95 deaths in over 40 di
    13·2 answers
  • What defines a macromolecule as a lipid
    10·2 answers
  • The word that means inflammation of a nerve is _____________. (must be spelled correctly.
    9·1 answer
  • What do the stripes in the paper represent?
    14·2 answers
  • Spread of ides is an example of
    13·1 answer
  • Maltose starch saliva ????
    5·1 answer
  • 4. Unlike a scientific theory, a scientific law describes an observed pattern in nature without
    8·1 answer
  • Discuss your thoughts on the overall lab design. Did it help you understand the concepts better, or did it raise more questions?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!