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
gogolik [260]
3 years ago
6

What is Darwin's name for species that do not appear to have changed for millions of years?

Chemistry
1 answer:
ioda3 years ago
4 0

Since, the options have not been given the question is incomplete.

What is Darwin's name for species that do not appear to have changed for millions of years?

a.

Dinosaurs

b.

Living fossils

c.

Old souls

d.

Ancient moderns

Answer: b. Living fossil

Explanation:

In 1859 Charles Darwin proposed the term living fossil, that means a species or group of species that had not changed in terms of evolutionary context thus can be useful in tracing the extinct or previously existing forms of life. The examples of the living fossils are horseshoe crabs, ginkgo (Conifers) and tuatara. These group of animals were existed unchanged in the Ordovician, Permian, and Triassic periods respectively with few surviving species.

You might be interested in
The vapor pressure of ethanol is 30°C at 98.5 mmHg and the heat of vaporization is 39.3 kJ/mol. Determine the normal boiling poi
Gelneren [198K]

Answer : The normal boiling point of ethanol will be, 348.67K or 75.67^oC

Explanation :

The Clausius- Clapeyron equation is :

\ln (\frac{P_2}{P_1})=\frac{\Delta H_{vap}}{R}\times (\frac{1}{T_1}-\frac{1}{T_2})

where,

P_1 = vapor pressure of ethanol at 30^oC = 98.5 mmHg

P_2 = vapor pressure of ethanol at normal boiling point = 1 atm = 760 mmHg

T_1 = temperature of ethanol = 30^oC=273+30=303K

T_2 = normal boiling point of ethanol = ?

\Delta H_{vap} = heat of vaporization = 39.3 kJ/mole = 39300 J/mole

R = universal constant = 8.314 J/K.mole

Now put all the given values in the above formula, we get:

\ln (\frac{760mmHg}{98.5mmHg})=\frac{39300J/mole}{8.314J/K.mole}\times (\frac{1}{303K}-\frac{1}{T_2})

T_2=348.67K=348.67-273=75.67^oC

Hence, the normal boiling point of ethanol will be, 348.67K or 75.67^oC

3 0
3 years ago
What type of charge does each part of an atom have (positive, negative, no charge)
Masteriza [31]
Answer:
P-positive
N-negative
E-no charge
6 0
3 years ago
Read 2 more answers
I need please fast ASAP
sdas [7]
Kindly checkout the attached pic. It contains all your required questions. 

4 0
3 years ago
When steam condenses into water, __________. When steam condenses into water, __________. heat is given off by the water no heat
lys-0071 [83]

Answer: heat is given off by the water

Explanation:

Condensation can be defined as the process by which water vapors or steam in the atmosphere are converted into liquid water. It is the part of water cycle. The water form water bodies and terrestrial surfaces gets evaporated in the form of water vapors. These vapors rise in the upper atmospheric layers and aggregate to form the clouds when these vapors become heavy they fall down in the form of rain. Heat is given off in this process by the water vapors or steam to be converted in liquid.

4 0
3 years ago
What is Behavioral Adaption!!!!!!!<br> I need a definition quick!!!!
tia_tia [17]
Behavioral Adaptation is something that is natural in animals that are used for survival. Example: Birds Migrating north during the winter.
6 0
3 years ago
Other questions:
  • H+(aq) + OH–(aq) → H2O(l) + 55.8 kJ In this reaction there is conservation of
    5·1 answer
  • Concentrations expressed as a percent by mass are useful when the solute is a _____.
    11·2 answers
  • What are atoms comprised of?
    5·1 answer
  • Temperature is an example of a categorical variable a quantitative variable either a quantitative or categorical variable neithe
    9·1 answer
  • What may happen to the electron when it loses its energy?
    13·2 answers
  • When an object transfers energy to another object, does it always transfer all of it’s energy?
    7·2 answers
  • What is the mass in grams of 14.2 liters of sulfur dioxide gas at STP?
    6·1 answer
  • How to solve x² in differential​
    6·1 answer
  • QUICK I WILL CHOOSE BRAILEST
    14·2 answers
  • When 2 moles of C6H6 react with excess Oxygen gas, how many moles of water are produced?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!