How do scientists estimate the age of Earth to be 4.6 billion years old

What could farmers do to prevent another potato famine?

Lions are classified as Panthera leo. Tigers are classified as Panthera tigris. Which of the following statements is true? Lions and tigers belong to the same genus. Leo is the name of the lion division. Lions and tigers belong to the same species.

What is the purpose of first round of meiosis?

What affects algal growth with increasing depth in the ocean? A. salt concentration, salt concentration increases with depth B. light, light decreases with depth, affecting photosynthesis C. temperature, temperature decreases with depth

Which of the following correctly describes x-rays and their applications? 1. Medical x-ray imaging relies on the change in intensity of a beam due to absorption in the matter, whether the common x-ray radiograph or CT/CAT scanning. 2.

Why is an angioplasty an incorrect treatment for an aneurysm? A) Aneurysms cannot be treated. B) An angioplasty may rupture the blood vessel wall. C) An angioplasty can have dangerous drug reactions. D) Aneurysms are treated only with pacemakers.

Why was nucleic acid disregarded for so long as the molecule responsible for the transmission of hereditary information?

Sally's estimated energy requirement, based upon her age, height, and weight, is approximately 2000 kcalories per day. What is the maximum number of kcalories per day that she can consume to lose 3 pounds per month. Assume 1 month is 30 days. a.

Which hormone causes the regrowth of the endometrial lining of the uterus? testosterone estrogen GnRH progesterone

78.44 meters to centimeters