One activity that can increase genetic variation within a population of earthworms is mutation.
Mutation is a process that results in a change in the DNA sequence of an organism's genome. Mutations can occur naturally due to errors in DNA replication, exposure to environmental factors such as radiation or chemicals, or as a result of genetic recombination during sexual reproduction.
Mutations can be beneficial, harmful, or neutral in their effects on an organism. They can introduce new variations or traits that can be subject to natural selection and influence the evolution of a population. Mutations can also cause genetic disorders or contribute to the development of cancer. The study of mutations and their effects is an important field in genetics and evolutionary biology.
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Answer: no, they care for their own.
Explanation:
b. to keep animals in zoos for people to see
c. protect species from extinction
d. stop hunting
Answer:
c
Explanation:
Heart attacks reduce blood flow to the heart and cause coronary artery disease.
Coronary artery disease can reduce blood flow to the heart and cause heart attacks.
Heart attacks occur when coronary artery disease is treated.
coronary heart diseases occur when the arteries are blocked with fatty deposits
so there is less blood flow to the heart. less oxygen and nutrients to the heart. this leads to heart attack. coronary diseases lead to attacks
b. The time it takes for the nucleus of one atom of a radioactive isotope to split in half.
c. The time it takes for half of the nuclei in a sample of a radioactive isotope to decay.
d. The time it takes for the nucleus of one atom of a radioactive isotope to decay.
The time it takes for the nucleus of one atom of a radioactive isotope to split in half is half life.
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