Answer:
When an organism dies, its carbon-14 decays back into nitrogen-14 at a known rate, called a half-life (5,730 years). By measuring the remaining carbon-14 in fossils, scientists can estimate their age, helping us understand the history of life on Earth.
b. mercury
c. ozone
d. oxygen
bryophyte
tracheophyte
sporophyte
the answer would be a tracheophyte! good luck on the rest of your tests!
Answer:
The squirrelfish solves this problem by using special cells and mechanisms to regulate the salt concentration in its body.
Explanation: