Scientists use various methods to determine the age of matter. Which method below would a scientist most likely use to determine the absolute age of a rock layer? 1.Identify the oldest fossilized remains in the rock layer.

2.Measure the magnetic strength of the material in a sample of the rock.

3.Compare the amount of stable daughter elements present with the amount of radioactive parent elements.

4.Compare the composition of the rock sample with other rock samples of known age.

4 Compare the composition of the rock sample with other rock samples of know age

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,