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
disa [49]
3 years ago
5

Why doesn't friction exist in space

Biology
2 answers:
yarga [219]3 years ago
5 0
Because their is no gravity in space
Alexeev081 [22]3 years ago
4 0

when two surfaces rub together in outer space, there will be friction. Friction is a surface effect and doesn't depend upon there being air. There is also a force like air resistance from the very sparse gas in space, but it will be very, very small, since space is a very good vacuum.

You might be interested in
In what ways do cells use energy
Salsk061 [2.6K]

Image result for In what ways do cells use energy

Cells do not use the energy from oxidation reactions as soon as it is released. Instead, they convert it into small, energy-rich molecules such as ATP and nicotinamide adenine dinucleotide (NADH), which can be used throughout the cell to power metabolism and construct new cellular components.

6 0
3 years ago
In the future, phylogenetic studies should be conducted to ________. In the future, phylogenetic studies should be conducted to
Artist 52 [7]

Answer:

a. resolve the branching patterns (evolutionary history) of the Lophotrochozoa

b. (the same, it is repeated)

Explanation:

Nemertios (ribbon worms) and foronids (horseshoe worms) are closely related groups of lofotrocozoa. Lofotrocozoans, or simply trocozoans (= tribomastic celomados with trocophoric larva) are a group of animals that includes annelids, molluscs, endoprocts, brachiopods and other invertebrates. They represent a crucial superphylum for our understanding of the evolution of bilateral symmetry animals. However, given the inconsistency between molecular and morphological data for these groups, their origins were not entirely clear. In the work linked above, the first records of genomes of the Nemertine worm Notospermus geniculatus and the foronid Phoronis australis are presented, along with transcriptomes along the adult bodies. Our phylogenetic analyzes based on the genome place Nemertinos as the sister group of the taxon that contains Phoronidea and Brachiopoda. It is shown that lofotrocozoans share many families of genes with deuterotomes, suggesting that these two groups retain a common genetic repertoire of bilaterals that do not possess ecdisozoans (arthropods, nematodes) or platizoos (platelets, sydermats). Comparative transcriptomics demonstrates that foronid and brachiopod lofophores are similar not only morphologically, but also at the molecular level. Although the lofophore and vertebrates show very different cephalic structures, the lofophorees express the vertebrate head genes and neuronal marker genes. This finding suggests a common origin of the bilaterial pattern of the head, although different types of head will evolve independently in each lineage. In addition, we recorded innate immunity expansions of lineage-specific and toxin-related genes in both lofotrocozoa and deuterostomes. Together, this study reveals a dual nature of lofotrocozoans, in which the conserved and specific characteristics of the lineage shape their evolution.

8 0
3 years ago
The ears work with the brain and other body parts through a series of steps that help you hear the sound of a train coming. What
san4es73 [151]

Explanation:

first of all our eyes recognise to train and send the message to our brain then our ears and then the brain send motor impulses to muscles of leg

5 0
3 years ago
Read 2 more answers
If you know that a population is 75% the dominant phenotype and 25% is the recessive phenotype, can you determine approximately
Andreyy89
If dominant allele = p, and recessive allele = q,
and p+q = 1, then:
{(p + q)}^{2}  =  {p}^{2}  + 2pq +  {q}^{2}  \\ where \:  {p}^{2}  \: is \: homozygous \: domin \\  {q}^{2}  \: is \: homozygous \: recessive \\ and \: 2pq = heterozygous
So if 75% have the p, then p^2 = homozygous dominant
{p}^{2}  =  {(.75)}^{2}  = .5625
And if the other 25% have the q, the q^2 = homozygous recessive
{q}^{2}  =  {(.25)}^{2}  = .0625
Now those remaining MUST be the heterozygous, thus 2pq are those:
2pq = 2(.75)(.25) = .375

Therefore homozygous dominant are 56.3% and heterozygous are 37.5%
8 0
4 years ago
what evidence do scientist find in the fossil record that suggests there was a big extinction event that occurred 66 million yea
Svet_ta [14]

Scientists continuously find fossilized bodies of dinosaur bones that all appear to have died the same way.  It is because of these discoveries that we know that dinosaurs and other pre-historic species existed on Earth 66 million years ago.  

4 0
3 years ago
Other questions:
  • How can scientists determine the absolute age of a rock sample?
    10·1 answer
  • Many scientific discoveries begin with direct observations. Which could be a direct observation?
    7·1 answer
  • Experiments to determine if a specimen is living or not
    13·1 answer
  • How do I do well for situational writing?
    11·2 answers
  • Which pair of statements best describes an essential amino acid?
    11·2 answers
  • 4. Which of the following statements best describes how proteins and enzymes move within a cell?
    6·1 answer
  • Solve the scrambled letter according to the clue: nlpituloo _ _ _ _ _ _ _ _ _: Litter on the ground or harmful chemicals in the
    10·2 answers
  • The NADH and FADH2 used by the electron transport chain are normally produced in the mitochondria; however. Select one:
    7·1 answer
  • What happened to many Maldives islands due to rising sea levels?
    15·1 answer
  • You will need the following materials to build the model:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!