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
Monica [59]
3 years ago
13

-what new inventions made possible for scientists to practice direct observation?

Biology
1 answer:
Cloud [144]3 years ago
8 0
Microscope is one of the invention for scientist to practice direct observation. It allows scientists to observe the world in micro scale.
You might be interested in
How does a virus cause disease?
nika2105 [10]

Answer:

Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick. Different viruses attack certain cells in your body such as your liver, respiratory system, or blood.

Explanation:

Viruses tend to target specific tissues (cells) in the host.

For example, the influenza virus has a predilection for the respiratory tract, hepatitis viruses target the liver, polio virus targets the motor neurons of the spinal cord and rotavirus multiplies in the gut. Symptoms of a viral infection may be subtle and nonspecific or specific and suggestive of the causative agent.

Dengue virus, Ross river virus, measles and rubella infections are associated with fever and a widespread red rash, chicken pox and herpes simplex viruses are associated with blistering, often localized, rashes; and hepatitis viruses cause liver damage and jaundice.

Bacteria tend to be less tissue-specific and non-discriminatory than viruses and can cause a variety of infections once they have invaded the host.

These bacterial infections are often manifested by the presence of pus wherever the bacteria settle, and systemic symptoms such as fevers, chills, pain, swelling and loss of function occur when bacteria invade and multiply.

8 0
3 years ago
Disorientation and loss of motor control can result from
kari74 [83]
<span>Hypothermia is a condition that can cause a person to feel disorientated and result in the loss of motor control. Hypothermia is a grave condition that takes place when your body loses heat faster than it can produce it, resulting in a body temperature that is dangerously low.</span>
4 0
3 years ago
What can the student conclude about her hypothesis based on the results?
solong [7]

Answer: The results will tell us about the correctness of hypothesis.

<u>Explanation:</u>

The Hypothesis is that explanation which is used as a starting of any investigation. The Hypothesis can or cannot be correct. We can test the hypothesis with scientific research.

Now a student can make conclusions about the hypothesis based on the results obtained. If results are the same as the hypothesis it means that our proposed explanation i.e hypothesis was correct but if the result differs than it means the hypothesis was not correct.

7 0
3 years ago
Write down 2 things that you remember about density
stellarik [79]

Answer:

Explanation:

Density, the weight of an object divided by its volume, is a property of all matter, including solids, liquids and gases. The value of an object's density depends on what it's made of as well as its temperature; for example, lead weights are denser than feathers, and cold air is denser than hot air.

3 0
3 years ago
Body systems work alone to keep the body in a state of homeostasis<br><br> True or false
Oliga [24]

Answer:

False, the body systems have to work together to maintain homeostasis

Hope this helps!

4 0
3 years ago
Read 2 more answers
Other questions:
  • My test is timed PLse answer
    10·1 answer
  • Two questions! please answer ASAP! please give detailed answers.
    14·1 answer
  • How is the circulatory system similar to a road-and-highway system?
    12·1 answer
  • Glycolysis is the process of converting glucose into pyruvic acid. Where does this process occur?
    14·1 answer
  • What is the rule of a control group in any experiment
    9·1 answer
  • Sterol and stanol esters, also go by the name ________________, and help lower blood ______________.
    9·2 answers
  • What do we call female reproducyive part ??​
    10·1 answer
  • Please help please help please helpppppp.
    13·1 answer
  • The concentration of carbon dioxide in the atmosphere has been gradually increasing for many years. How might this increase affe
    15·1 answer
  • The second phase of Mitosis is metaphase . In this phase the sister chromatids line up on the metraphase plate through a push an
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!