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
GalinKa [24]
2 years ago
15

Which of the following are examples of what scientists can learn from studying fossils?

Biology
2 answers:
FrozenT [24]2 years ago
7 0
The answer is a and c
Degger [83]2 years ago
3 0
The answer is a and c
You might be interested in
You dilute an unknown sample of bacteria to 1 x 10-6 and plate out 10 onto a Petri dish. The next day you count 64 colonies. The
Sveta_85 [38]

Answer:

b

Explanation:

The correct answer would be 6.4 x 10^6 cells/ul.

For 1 x 10-6 dilution, the plating factor is 10^6. To find the number of bacteria in the original sample, the plating factor is multiplied by the colony count per ul.

<em>Number of viable bacteria = plating factor x colony count/ul</em>

Since 10 ul gives 64 colonies.  1 ul will give:

         64/10 = 6.4 colonies.

Therefore, the viable bacteria in the original sample = 6.4 x 10^6 cells/ul

The correct option is b.

3 0
3 years ago
An enzyme acts as a catalyst to a chemical reaction by
olya-2409 [2.1K]

Answer:

Speeding up chemical reactions by lowering the activation energy.

Explanation:

8 0
3 years ago
Read 2 more answers
Which organelles digest waste materials and worn out organelles?
seraphim [82]

Answer:

Lysosomes

Explanation:

break down food molecules, waste products, and old cells.

8 0
3 years ago
What type of tissue has cells that are tightly packed
IgorLugansk [536]

Answer:

The answer would be the epithelial tissue.

Explanation:

4 0
3 years ago
Read 2 more answers
How does water rise in tall trees
Debora [2.8K]

Answer:

Answer: Water rise to tall trees by suction pull during day it is low but during night time it is fast. during night time transpiration is fast and transpiration create a pressure also called transpirational pull which cause root water to move at leaves.

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What does to wound or pierce with a pointed weapon?
    9·1 answer
  • The lowermost portion of the atmosphere where most weather occurs is called the ________.
    5·1 answer
  • What is a lysosome?
    9·2 answers
  • Which of the following statements best describes chemical weathering
    5·2 answers
  • What are two basic differences between DNA and RNA?
    6·2 answers
  • Biological scientists use a variety of methods to gather evidence, or data. If a biologist makes a diorama of a plant cell, what
    9·1 answer
  • The study of a the human brain and behavior
    7·2 answers
  • Do you think ancient Antarctica was situated in a different location from its location today? Why or why not?
    13·2 answers
  • A tight rope walker who does not want to change his position will want the forces acting on him to be what?
    15·2 answers
  • With 20 points, please answer!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!