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
Andreyy89
2 years ago
9

which tool enhances a scientist’s senses? a microscope a calculator a test tube a stirring stick

Biology
2 answers:
Evgesh-ka [11]2 years ago
7 0

The right aswer is a microscope.

The microscope is an optical instrument that makes it possible to examine objects or elements invisible or difficult to see with the naked eye, thanks to a lens.

Subsequently, the tool evolved, in terms of its shape and its lenses: in 1667, Robert Hooke realizes the first complete model as we know it: composed of a table, a system of development and a condenser light, the device will be used to discover the cell.

VLD [36.1K]2 years ago
6 0
Microscope, hope this helped.
You might be interested in
All the following are true of the movement of Earth's atmosphere except :
zheka24 [161]

Answer:

All  are true of the movement of Earth's atmosphere except :

d. Warm air is less dense than cool air so it tends to sink towards the Earth's Surface.

Explanation:

  • When gases heat up, their volume increases and  density decrease.
  • A decrease in density causes a substance to become lighter.
  • Thus, when air warms up due to heat from the sun its density decreases and it gets lighter.
  • So, it will move up.
  • The Cooler air in turn is denser and heavier so it will sink towards the Earth's surface.
  • Hence, the statement d , which states that 'warm air is less dense than cool air so in tends to sink towards the Earth's Surface' is FALSE.
5 0
3 years ago
Which side of the ruler would you use to measure the length of an I-phone in Biology class and why?
Mekhanik [1.2K]
The inches side because you measure things in inches when it's talking about length not cm unless you have to convert
8 0
3 years ago
A large number of disease-free individuals were enrolled in a study
Nuetrik [128]

Answer:

a,Answer: Type I right censoring, censoring time = 60.

b.This is called an Interval censoring,

c.this is called Random censoring because the year in consideration was chosen at random, censoring time = 61.

d.The observations are left truncated respectively at age 30, 40, 50 and 42.

e.L\alpha \frac{S(60)}{S(30)} *\frac{S(52)-S(55)}{S(40)} *\frac{S(61)}{S(42)} *\frac{S(55)}{S(50)}

Explanation:

a) A healthy individual, enrolled in the study at age 30, never developed

breast cancer during the study.

Answer: Type I censoring, censoring time = 60.

(b) A healthy individual, enrolled in the study at age 40, was diagnosed

with breast cancer at the fifth exam after enrollment (i.e., the disease

started sometime between 12 and 15 years after enrollment).

THis is called an Interval censoring,

if the clinical exams is conducted every three years , then 3*4=12, and 3*5=15

add this to 40 years respectively, we have

censoring time = (52, 55]

c) A healthy individual, enrolled in the study at age 50, died from a

cause unrelated to the disease (i.e., not diagnosed with breast cancer

at any time during the study) at age 61.

this is called Random censoring because the year in consideration was chosen at random, censoring time = 61.

(d) An individual, enrolled in the study at age 42, moved away from

the community at age 55 and was never diagnosed with breast cancer

during the period of observation.

Random censoring, censoring time = 55.

The observations are left truncated respectively at age 30, 40, 50 and 42.

e.  Confining your attention to the four individuals described above,

write down the likelihood for this portion of the study.

L\alpha \frac{S(60)}{S(30)} *\frac{S(52)-S(55)}{S(40)} *\frac{S(61)}{S(42)} *\frac{S(55)}{S(50)}  

the above represent the likelihood

3 0
3 years ago
Animals wrestling is a way of learning called _____.
Levart [38]

Playing is the correct to your question.

5 0
2 years ago
Read 2 more answers
The value put on timeliness in the United States is actually a cultural universal in every culture. True or False
Liono4ka [1.6K]
The answer is false!!!!!!!!!!!!!!
4 0
3 years ago
Read 2 more answers
Other questions:
  • 1. Define fitness as it used to describe adaptation(11.3).
    11·2 answers
  • Which of the following statements is true?
    15·2 answers
  • Explain why toxic compounds usually have the greatest effect on top-level carnivores
    11·1 answer
  • Which statement is true about bacterial cells? *
    7·2 answers
  • Which of the following statements is true about tides?
    6·1 answer
  • Is rabbits a herbivore,carnivore,omnivore??
    5·2 answers
  • An animal cell is dividing. Which of the following would not be seen during this process?
    7·1 answer
  • Plz answer again will give brainlest you just gotta tell me how to do it
    15·2 answers
  • HURRRY
    7·1 answer
  • List two reasons why cells need to be small.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!