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
lozanna [386]
3 years ago
10

Adaptations shaped by natural selection:_____

Biology
1 answer:
luda_lava [24]3 years ago
8 0

Answer:

e) are continuously modified so that they are always matched to the environment in which a population lives

Explanation:

The role of natural selection is to select individuals best adapted to a given ecological condition, allowing them to survive and leave descendants in a given environment.

Natural selection acts permanently on all populations. Even in stable and constant environments, natural selection acts in a stabilizing manner, is present, eliminating divergent phenotypes.

However, the environment does not represent a constant and stable system, in fact, it is always changing, both over time and throughout space, which determines different interactions between organisms and the environment.

You might be interested in
What is a useful first step in assessing potential environmental health risks in a community? a.Conduct risk assessments of sele
emmasim [6.3K]

Answer: d. Perform a windshield survey

Explanation:

Environmental health risks include air pollution, disease vectors, lack of water and inadequate sanitation, electronic waste, and chemical hazards.

Conducting a windshield survey is a valuable first step in identifying possible safety threats to the environment. This offers first-hand neighbourhood information and areas of concern which need to be investigated.

Hence, the correct option is d.

5 0
3 years ago
Researchers have found that mitochondria and chloroplasts in eukaryotic cells have their own DNA. This DNA is different from the
ikadub [295]

Answer:

B. Early Eukaryotic cells engulfed mitochondria and chloroplasts

Explanation:

Mitochondria and Chloroplast are organelle that are found in cells of higher animals. Chloroplast are found almost exclusively in plants and mitochondria is found in animal cells. The function of these organelles are to produce energy to the cells, and by extension, the organism that they live in.  

Unique features of these organelles show that they have their own DNA and divide and multiply on their own. This strongly suggest that they were once free living prokaryotes and were engulfed by larger cells and a symbiotic relationship began.

As time progressed, these prokaryotes did not require all of their genetic information and this was removed from their system. They kept essential genes and regulatory bodies separate that they needed for their maintenance and function that they provide.  

8 0
3 years ago
What is the best choice for a blank when calibrating the spectrophotometer when you will later measure the absorbance of beverag
ELEN [110]

When calibrating a spectrophotometer, measuring absorbance concurrently is the best option for a blank since it is proportional to the concentration.

Beer's law states that A = a b c, wherein there is the diffusion coefficient at a constant, b is the actual route length, & c is the concentration. Direct proportionality exists between b and c and absorbance.

Once the route length is doubled, incident light contacts double as many molecules in the solution. The consequence is a doubling of absorbance, which is equivalent to a doubling of molecule concentration.

There are two ways to detect chemicals using spectrum scanning. One approach involves turning the monochromator continuously with a stepping motor while gradually altering the wavelength connected to the output slit.

It is more practical to use diode array detectors. Up to a few hundred photodiodes may be incorporated into the chip that makes up this device.

Learn more about spectrophotometers at

brainly.com/question/29306587?referrer=searchResults

#SPJ4

6 0
11 months ago
16. List three reasons why the young earth could not support life.
xxTIMURxx [149]
1. Early earth had no ozone layer, which means it was most likely extremely hot.
2. Young earth had no oxygen and life needs oxygen in order to survive.
3. There where so many natural disasters happening all the time, like volcanic eruptions and constant impact with meteorites and asteroids.
-Extra one (4. Earth originally had no ocean and water. Oceans eventually formed from the water vapor released from the volcanic eruptions, but before that there was nothing.)
4 0
2 years ago
Damaged cells of an organism are usually ___ by mitosis?
Harman [31]

Answer:

usually repaired by mitosis

3 0
2 years ago
Other questions:
  • Hector looks around his classroom at different objects. Which object reflects almost all of the light that strikes it?
    15·2 answers
  • explain how the rate of photosynthesis or cellular respiration can be measured using products or reactants
    7·1 answer
  • This tissue type is a covering and lining tissue. it also includes glands.
    10·1 answer
  • What is the function of the cortex in the kidney
    7·2 answers
  • The __________ guards the entry of food into the stomach.
    7·1 answer
  • Is deforestation reversible?
    9·2 answers
  • After asking a question what does a scientist form that can be proved or disproved by an explanation
    12·2 answers
  • What are some of the "green" technologies being developed to help prevent further damage to ecosystems and the environment?
    15·1 answer
  • Most plants get nitrogen from?
    15·1 answer
  • How do you think a period of hot summers will affect the rabbit population?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!