answer.
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
kvv77 [185]
2 years ago
5

Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. What experiment did h

e conduct to test this hypothesis?
Biology
2 answers:
Semmy [17]2 years ago
8 0

Answer: B

<h2>the breeding of pigeons</h2>

Choices:

the breeding of finches

the breeding of pigeons

the observation of humans

the observation of dog breeds

Marianna [84]2 years ago
3 0
He watched animals in their natural habitat and started research on them. Each animal have a unique place to live and they have all different ways to survive in their habitat. That is evolution, small changes became a huge help for these animals for their struggle to survive. He saw how animals could evolve so quickly into a new habitat, using their mental and physical skills to do that.
You might be interested in
Bill does 1500 J of work on a lever, which is a simple machine. The lever does 1350 J of work on a stone.
Oksanka [162]
Efficiency is the measure of how much work or energy is conserved in a process. In many processes, work or energy is lost, for example as waste heat or vibration. The efficiency is the energy output, divided by the energy input, and expressed as a percentage.
Efficiency is the energy output, divided by the energy input, and expressed as a percentage. 
Efficiency = (1350/1500)×100
                = 90%
3 0
2 years ago
Read 2 more answers
Humans and hogs have differences in only 1 out of the 51 amino acids in their insulin proteins. Hogs and guinea pigs have differ
balu736 [363]

Humans are more closely related to hogs than hogs are to guinea pigs.

Explanation:

The difference in the amino acid sequence of a protein is used to know the  relation between organism i.e. how closely they are related.

It is known that proteins are the result of DNA sequence ie genes of the organism.

The gene or protein is compared between organisms to understand the evolutionary evidence and similarities between them.

The less is the difference the more is the two organisms closely related as in the case of hog and human which have only 1 amino acid difference in their insulin enzyme. While guinea pig is having  a difference of 17 amino acids so it is expected to be distantly related.

These relations helps the scientist to resolve the issues of crisis say insulin. They zero out the possibility of extracting the enzyme genes of possible organism and increase the yield.

6 0
2 years ago
If bears find insects after they move decaying logs, they more frequently move decaying logs. This most clearly indicates that f
Alex777 [14]

Answer:

Reinforcement

Explanation:

Reinforcement can be referred to as anything that can be used to increase, enhance or strengthen a desirable behavior in a person or an organism. Reinforcement is of two types, they include positive reinforcement and negative reinforcement. Positive reinforcement has to do with adding a reward in order to enhance a desirable behavior, while negative reinforcement has to do with removing an undesirable thing in order to strengthen a desirable behavior.

From the question asked,  because the presence of insects after moving the decaying logs increased the frequency at which the bears moved the decaying logs, the finding of the insects is, therefore, a reinforcement. The finding of the enhanced or strengthened the desirable behavior.

6 0
2 years ago
What is a disacharride?
irinina [24]
2 monosaccharides (glucose monomers) combined
4 0
2 years ago
A client is undergoing photochemotherapy involving a combination of a photosensitizing chemical and ultraviolet light. what heal
NARA [144]
Psoriasis is a skin disease that manifests itself in symptoms of varying severity. It is a chronic disease that can not be cured but can be alleviated by many treatments (like chemotherapy).
Photochemotherapy: also called P-UVA. It consists of the combination of UVA (a type of UV light) radiation after the local or oral administration of a psoralen that acts as a sensitizing photo. It is used alternately in patients for whom UVB (another type of UV) has no effect, as P-UVA is more effective and longer-lasting, but is associated with basiloma (basal cell carcinoma) and melanoma.
6 0
2 years ago
Other questions:
  • Discuss THREE properties of water. Explain each of the following in terms of the properties of water. You are not limited to the
    13·2 answers
  • "some __________ neurons are specialized to detect stimuli, whereas __________ neurons send signals to the effectors of the nerv
    14·1 answer
  • When the cell concentrates potassium within, against the natural tendency of matter, it is performing _____.
    15·2 answers
  • Which part of the brain processes inputs received from the cerebral motor cortex, brain stem nuclei, and various sensory recepto
    13·2 answers
  • Explosions can occur when electricity ignites explosive gases in the air, such as pure oxygen, methane, or natural gas. true or
    6·2 answers
  • An object goes from a speed of 90 m/s to a total stop in 3 s. What is the objects acceleration? (Physical science)
    11·1 answer
  • What situation best represents how DNA sequencing, PCR, and gene probes might be used together? Multiple Choice Scientists might
    10·1 answer
  • Chlorenchyma and aerenchyma are modified ____________ (a) phloem (b) sclerenchyma (c) collenchyma (d) parenchyma
    9·1 answer
  • A hypothesis is a general principle or explanation that is derived from observations. Suppose you make the following observation
    11·1 answer
  • Today, pandas live in fragments of forest that are not connected. What is one way that fragmented habitat could affect the growt
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!