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
Musya8 [376]
2 years ago
7

BRAINLIEST AND 100 POINTS FIRST ANSWER GETS BRAINLIEST!!!

Biology
2 answers:
nexus9112 [7]2 years ago
7 0

Answer:

Half-Life is the time for a substance (U-235 in this case) to decay to 1/2 its original mass.

Since the problem is asking for the time for U-235 to decay to 1/2 its original mass (100 grams to 50 grams) then the decay time is 1 half-life, or 700 million years.

hope it helps u kindly mark as brainliest...

horrorfan [7]2 years ago
6 0

Answer:

A stone artifact that formed 700 million years ago

Explanation:

By the details it is said that Uranium-235 was 700 million years old, so it would make sense for it to be stone since it is stone like.

You might be interested in
Do dams purify water?
Marysya12 [62]

Answer:

I dont think so but i really dont know.

Explanation:

I dont know.

5 0
2 years ago
Read 2 more answers
Which of the following levels is the least inclusive, smallest, and most specific of the choices? A. Kingdom B. Order C. Family
Solnce55 [7]
<span>The correct answer is C. Family. That is because the only things smaller than family are genus and species and they are not mentioned here. Life and domain are larger than kingdom and kingdom is larger than phylum. Class and order are smaller than phylum but are larger than family. That's why your correct answer is family.</span>
7 0
2 years ago
I need help putting in the blanks?
gregori [183]

Answer:

scientific law

Explanation:

6 0
3 years ago
Read 2 more answers
The image shows the evolution of a species of fish. A few fish from a population developed different social behaviors and evolve
adell [148]

According to the image, the fish underwent sympatric speciation. The new species of fish had mating seasons that were different from that of the original fish. Because of the differences in mating seasons, the fish underwent reproductive isolation. This mode of isolation would be temporal.

Sympatric speciation happens within a population of an organism that gets isolated reproductively due to differences in their mating periods. This time dependent isolation is called temporal isolation. Example, a fish population can split into two if some of the fishes start mating early in the spring while the rest mate late in the autumn. The spring-mating population will not become compatible to mate with the late-autumn-mating population.

7 0
3 years ago
Read 2 more answers
Some leaves turn orange, red, or yellow before they drop. What is present in them that makes them so colorful
Lapatulllka [165]
Leaves get their colors through pigments. Leaves turn green because of chlorophyll but when they turn orange red and yellow it’s the chlorophyll breaking down and mixing with pigments (like carotenoids)
8 0
2 years ago
Other questions:
  • What is one of the primary functions of this food in the body?
    9·1 answer
  • Your spinal cord works like a a0 wire, sending messages back and forth between your body and your brain.
    8·2 answers
  • Cicada Killer wasps capture and paralyze cicadas by stinging them, and then fly with their cicada to their burrow. They drag the
    8·1 answer
  • What are made in the light reactions of photosynthesis?
    5·2 answers
  • Martin's goal is to increase his arm strength. Look at these entries in his workout log and determine which principle of trainin
    13·2 answers
  • Mrna,amino acids,type of mutation
    8·1 answer
  • Describe the 3 main types of forest lands
    10·1 answer
  • A male horse with a white reproduces with a female horse with a brown coat. If coat color is a codominant trait, what would you
    11·1 answer
  • What is the main trend shown in the graph?
    12·1 answer
  • What feature would easily distinguish schist and gneiss from quartzite and marble?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!