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
lyudmila [28]
3 years ago
9

What is the shortest period in which a population of darwin's finches can evolve?

Biology
1 answer:
Studentka2010 [4]3 years ago
3 0
Darwin's finches are a gathering of around fifteen types of passerine winged animals. They are outstanding for their exceptional decent variety in nose frame and capacity. They are regularly named the subfamily Geospizinae or tribe Geospizini. 
After an immense dry spell, the greater hooked finches lived and the littler ones passed on. So two years after the fact finches har mouths that were somewhat greater.
You might be interested in
A gram-positive bacteria suddenly acquires resistance to the antibiotic methicillin. This trait most likely occurred due to
devlian [24]

The correct answer is option C, Conjugation

During conjugation the genetic material is transferred between two bacteria through a bridge like connection. In this was the bacteria acquires the resistance to the antibiotic methicillin

7 0
3 years ago
What is the most common way of introducing recombinant DNA into bacterial cells?
kykrilka [37]

Answer:

Transformation

Explanation:

7 0
3 years ago
Read 2 more answers
Albert needs to determine the force of gravity on a 250 g ball. The force of gravity on a 1000 g ball is about 10 Newtons.
Savatey [412]
(250/1000)*10=2.5 answer is D
7 0
3 years ago
Calculate the number of neutrons in an atom of an element that has a mass number of 98 and an atomic number of 42
olya-2409 [2.1K]
There are 56 neutrons. To find them, you just have to subtract the atomic number with the atomic mass. If you dont know, the atomic number is the number of protons (and electrons) in an atom. The atomic mass is the number of both the protons and neutrons. Of you subtract the atomic number, you get protons.
8 0
3 years ago
Please help!
Gala2k [10]

Tundra and deserts are two biomes of the world which represent the extreme form of climates. Tudra is the coldest region of the earth while desert represent the hottest zones of the earth. But whats  the most common thing in these extreme zones is that they receive very less precipitation throughout the year (less than 25 cm).

Therefore, flora of the desert and Tundra have some special adaptations to survive without sufficient amount of water.

Let's see what are those:

  • Tundra:
  1. The height of plants growing in Tundra is very less like lesser than 1 foot. The short structure of the plants helps them to get more heat from the dark soil and helps to survive freezing. The short height lets them stay protected from harsh effects of cold or snow.
  2. The plants in tundra grow in groups or clumps that helps them in surviving the attacks of ice particles or snow balls. For example: lousewort and Arctic crocus.
  3. Some flora of tundra has ability to grow even in the complete lack of water for several years.This is because they have waxy layers that cover the leaves and store maximum water for the periods of no availability.
  4. Some plants have hair on the surface of stems that trap maximum heat and protect the plant from heat and extreme forms of wind. For example: Arctic crocus.
  • Desert
  • Desert plants not only have physiological but also morphological adaptations to survive heat stress and shortage of water. Their stems, roots and leaves are fleshy and help them to store water for a large period of time. For example: Cactus
  • Many desert plants like <em>xerophytic bromeliads</em> and <em>epiphytic orchids </em>contain a system alternate of photosynthesis called CAM (Crassulacean Acid Metabolism). This process helps the plant to open the stomata at night for exchange of gases and accumulate CO2. In day, stomata are closed and the CO2 is used for photosynthesis. This is an adaptation, because during night when temperature is low, CAM plants lose less water as compared to what normal plants lose during day.
  • Some plants have extremely large roots that absorb maximum water from soil and compensate the plant's loss of water due to heat. For example: Phreatophytes.
  • Some Perennial plants  have adapted the mechanism to stay in condition of rest or dormant during extreme heat. They get back to normal life when weather become a bit better.

 Hope it helps! :)



8 0
3 years ago
Other questions:
  • If the biochemical oxygen demand (bod) of a lake is very high, how will that affect the aquatic life in the lake? view available
    6·1 answer
  • Characters traits can be discovered by analyzing __________.
    7·2 answers
  • Why would too much salt intake cause someone to develop high blood pressure?
    15·2 answers
  • Which question most closely relates to the forester's observations and the collected scientific data on forests
    13·1 answer
  • Of the pH values below, which is considered "neutral" pH? A. 7.4 B. 9 C. 5.4 D. 7
    6·1 answer
  • What organelle is found in a plant cell but not in a animal cell?
    5·1 answer
  • Variations in elevation of a land surface?
    5·1 answer
  • Heterotrophic organisms used the process of fermentation to nourish. What is fermentation?
    9·2 answers
  • What is the relationship between changing CO2 emissions and CO2 concentration?
    12·1 answer
  • How does blood defend against pathogens and toxins
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!