Primary spermatocytes, spermatids
Answer:
You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of <u>uniform dispersion.</u>
Explanation:
There are usually three dispersion patterns :
- Clumping
- Uniform dispersion
- Random dispersion
Clumping is the most common.
Uniform dispersion occurs when
- resources are scarce
- Individuals are evenly spaced in a habitat
- Due to competition or territorial behavior
While Random dispersion occurs when resources are plentiful.
Hence ,This is an example of <u>uniform dispersion.</u>
<span>1.keeps tooth alive
</span><span>pulp
2.surface of teeth
enamel
3.tube carrying food to stomach
esophagus
4.last major organ in digestive system
large intestine
5.digestive organ located above waist, close to ribs
stomach
6.first stage of digestion takes place here
mouth
7.regular squeezing movements
peristatiss
8.blood vessel leading from heart
artery
9. windpipe
trachea</span>
All elements are made of "atoms", and an atom is made up from 3 basic particles: Electrons are particles with a negative charge :)
Answer: "To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells."
