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
LekaFEV [45]
3 years ago
11

A human fingernail has a hardness of approximately 2.5. Which mineral is softer than a finger nail. A. calcite B. gypsum C. apat

ite D. diamond
Biology
2 answers:
Fofino [41]3 years ago
4 0
That answer would be, B. gypsum




-Nana
denis23 [38]3 years ago
3 0
According to the 2011 Earth Science Reference Table, Selenite Gypsum has an approximate hardness of 2.

The hardness of calcite is 3.

The hardness of apatite is 5 according to the Moh's hardness scale.

The hardness of diamond is 10.
You might be interested in
In addition to precipitation and temperature, biomes are classified primarily by the characteristics
vodka [1.7K]

Answer:

Plants and animals

Explanation:

6 0
3 years ago
Molecules that are ___ <br> and ____<br> membrane easily. <br> pass through the cell
alexandr402 [8]
O2 or co2 hope this helps
4 0
3 years ago
How can driving a car affect the carbon cycle?
alekssr [168]

Hey there, thx for posting your question to Brainly, i've posted some information below and an explanation, hope it helps you<3

Carbon moves from the atmosphere to plants. In the atmosphere, <em>carbon is attached to oxygen in a gas called carbon dioxide (CO2)</em>. Through the process of <u>photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.</u>

<u>Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.</u>

<u>Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.</u>

<u />

<u>Hey!</u><em> Hope i was able to help, have a good one.</em>

8 0
3 years ago
I need help, it is a math/science question and I don't understand it, may you please help? please and thank you.
lilavasa [31]

Answer: B. Temperature of 35 degrees celsius

Explanation: It is highest at the point between 30 and 40, which is where it's activity is the strongest.

7 0
3 years ago
A polyhydroxyl alcohol IS?
labwork [276]

Answer:

A polyhydroxyl alcohol is an alcohol that has two OH molecules attached. A regular alcohol has only one

Explanation:

6 0
3 years ago
Other questions:
  • why is it important for biologists to include scientific names when reporting their research to other biologists around the worl
    8·1 answer
  • The channel protein that accounts for why water can cross a membrane more quickly than expected is
    11·1 answer
  • Which of the following is a molecule with more than one element?
    7·2 answers
  • What are tiny organelles that convert glucose into ATP?
    10·1 answer
  • Sonny took 16 seconds to finish a 100 m race . what was sonny 's average speed in the race ? give your answer decimal form
    10·1 answer
  • What is phycomycetes​
    10·1 answer
  • List and describe the three domains of life
    15·1 answer
  • A mutation that has risen to high frequency through a selective sweep shows a characteristic pattern in which only one allele is
    15·1 answer
  • 46. A sample of human DNA is made up of approximately 30% adenine. Based on
    5·2 answers
  • Which phrase accurately describes the frog in this food chain?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!