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
Delicious77 [7]
3 years ago
15

A fossil bone has 25% of this new radioactive element remaining. If the half-life of this new element is 10,000 years, how old i

s the fossil bone?
Biology
1 answer:
natali 33 [55]3 years ago
4 0
The element starts off as 100%. half of 100% is 50% and half of 50% is 25%. the element has emitted 2 times the half life which is 10,000 x 2 = 20,000

the fossil bone is 20,000 years old
You might be interested in
What is meant by "nutrient limitation"?
inna [77]
The concept of limiting nutrients is essential to understand biological process.The nutrient in short supply relative to the others will be exhausted first and will thus limit cellular growth. 
The usual way of determining which nutrient is limiting is to increase the concentration of one nutrient. If there is no effect some other nutrient is limiting.
4 0
3 years ago
_____ recognized the vital role of the internal environment and suggested that the objective of mechanisms within the body is to
Sidana [21]
Robert hook is the one recognized vital role of the in internal environment and observers
5 0
3 years ago
Which of the following is an example of asexual reproduction?
nata0808 [166]

Answer:

b)a gray cat is the offspring of a black cat and a white cat.

Explanation:

We can eliminate a because sperm is used in sexual reproduction, c is an example of a cat inheriting a trait from it's parents which would be sexual reproduction, and d is 2 plants mating which is also sexual reproduction which only leaves you with b)a gray cat is the offspring of a black cat and a white cat.

4 0
3 years ago
What substance located within the chloroplasts of green plant cells collect light for use in photosynthesis A.water b.oxygen c.s
Alexus [3.1K]
D. chlorophyll is the main source of light in photosynthesis
3 0
4 years ago
Read 2 more answers
28. The figure below shows an animal tissue
saveliy_v [14]

Answer:

The tissues of multicellular, complex animals are four primary types: epithelial, connective, muscle, and nervous. Recall that tissues are groups of similar cells group of similar cells carrying out related functions.

Explanation:

.

5 0
3 years ago
Other questions:
  • All of the following are considered classification groups of viruses except
    15·2 answers
  • What is the structural unit of compact bone ?
    14·2 answers
  • How does Genetic Drift affect a population?
    11·1 answer
  • Scientists study salamanders and their ability to regenerate lost legs and tails. What additional information is essential for s
    11·2 answers
  • Select the sentence that has no punctuation or capitalization errors. "Mom said, Stephanie, please come here." "Mom said," Steph
    13·1 answer
  • Consider the food chain of grass → grasshopper → mouse snake → hawk. About how much of the chemical energy fixed by photosynthes
    15·1 answer
  • What vectors spread diseases like West Nile virus and malaria?
    8·1 answer
  • Which best describes what is occuring in this population of sqquirels
    8·1 answer
  • ples HEL MEEEEEEEAndy learns in school that plants grow best when they receive an optimal range of water, sunlight, and nutrient
    8·1 answer
  • Which factor most likely results in the loss of genetic variation from small populations?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!