BRAINLIEST AND 100 POINTS FIRST ANSWER GETS BRAINLIEST!!!

Biology

2 answers:

nexus9112 [7]3 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]3 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.

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How does increasing plant biomass (amount of plants) affect atmospheric CO

sleet_krkn [62]

Answer:

Since there are more plants more carbon dioxide is being removed because plants are carbon reservoirs.

Explanation:

3 0

3 years ago

Which is a type of star system? dim stars solar system planets wobbling stars globular clusters

pshichka [43]

Globular clusters is a type of star system where the stars are tightly bounded by gravity.

<h3>What is a star system?</h3>

A star system can be defined as small number of stars that orbit around each other and are bound by gravitational force of attraction.

It is also called a stellar system.

Globular clusters is a type of star system with the following features;