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
maksim [4K]
3 years ago
8

Please help me with this 2nd time asking​

Biology
1 answer:
Luden [163]3 years ago
6 0

Answer:

B I think

Explanation:

there are 2 directions and in each direction there are 2 working in it

You might be interested in
What applies to the collision therory
andriy [413]
The collision theory<span> is based on the assumption that for a reaction to occur it is necessary for the reacting species atoms or molecules to come together or </span>collide<span> with one another.\</span>
6 0
3 years ago
Between 1955 and 2012 the global TFR Rose from 2.4 to 5 true or false
Arada [10]

I believe it is actually false.  It dropped from 5 to 2.4.  Hope it helps!

7 0
3 years ago
1. transcription
ioda

Answer:

To summarize what we know to this point, the cellular process of transcription generates messenger RNA (mRNA), a mobile molecular copy of one or more genes with an alphabet of A, C, G, and uracil (U). Translation of the mRNA template converts nucleotide-based genetic information into a protein product. Protein sequences consist of 20 commonly occurring amino acids; therefore, it can be said that the protein alphabet consists of 20 letters. Each amino acid is defined by a three-nucleotide sequence called the triplet codon

6 0
2 years ago
Oxidising agents *
NNADVOKAT [17]

Answer:

Option A. are mostly non-metals.

Explanation:

Oxidising agents are mostly non-metals because non metals gains electron from the metal during chemical bond and we know that oxidising agent is electron accepter not donar. For example, Sodium is a metal react with chlorine which is a non-metal so the sodium losses electron and this electron is gain by chlorine atom forming sodium chloride. In this example chlorine is a non-metal which gains electron.

8 0
4 years ago
To aid inhalation, both the diaphragm and intercostal muscles are used. By expanding the thoracic cavity, the action of these mu
Naddika [18.5K]

Answer: lower atmospheric pressure

Explanation:

During the inspiration process the diaphragm, and external intercostal muscles. The contraction of the diaphragm causes the increase in the size of the thoracic cavity this causes the contraction of the external intercostal muscles. As a result of this the ribs and the sternum get elevated.  

This causes the lungs to expand, and increasing the volume of the air passage. In this response the air pressure inside the lungs reduces below the air outside the body. Thus this facilitates the movement of the gases from a region of high pressure to low pressure, this way the air rushes into the lungs.

5 0
3 years ago
Other questions:
  • Liquids have _____.
    11·1 answer
  • How do the daughter cells compare to the parent cells ?
    15·2 answers
  • When individuals leave a population, the remaining populations will likely experience a _________ in genetic diversity
    10·2 answers
  • How do scientist determine the health<br> of a body of water ?<br> What factors are consider ?
    6·2 answers
  • Which body of water is home to the ENSO cycle?
    10·2 answers
  • Plz help I will mark you brainlist plz ​
    10·2 answers
  • Please help ASAP !! <br><br> punnet squares- biology
    9·1 answer
  • State two functions of a microscope​
    10·1 answer
  • Why are zebra mussels able to spread so quickly in the United States?
    15·1 answer
  • Along with other distinct traits, robust australopithecines had large __________ adapted for grinding food. Group of answer choi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!