The map shows the location of Earth's principal biomes. Which abiotic factor in tropical forests do boreal forests lack?

warm temperature

Explanation:

I cannot see the choices in your image. I can only see choice A, which is "soil."

"Abiotic factors" are part of the ecosystem that don't have life. However, they have an impact on the life of the biotic factors (living organisms) in the environment. Examples of abiotic factors are: sunlight, temperature, climate, soil, humidity, wind, etc.

"Boreal forests" are abundant on the Earth's Northern Hemisphere. The climate here is generally cold, which doesn't allow some trees to survive. It is totally opposite to the warm temperature and high humidity that you can feel in the "tropical forests." Such factors allow many plants and animals to survive.

Clearly, the boreal forests lack the "warm temperature" that the tropical forests have.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.