The U.S.-Mexico border 2012 program’s goal is to _______. a. prevent illegal immigration
b. improve transboundary ecosystem health
c. promote joint economic development
d. reintroduce endangered species

Answers

Answer 1
Answer:

The correct answer is (b) improve transboundary ecosystem health.

The main goal of this mission was to improve the transboundary ecosystem by improving the health in the U.S border and to make it consistent by the help of sustainable development. It includes a variety of area that has to maintained. The air, water and land contamination has to be removed to improve the overall environmental health.

Answer 2
Answer: The US - Mexico Border 2012 Program's goal is to improve the transboundary ecosystem health. The purpose of such program is really focused on revitalizing the ecosystem, specifically the environment. Its goal is to reduce the contamination in the air, land and especially water. 

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The bee is pollinating the flower. This is an important step in the ____________ of flowering plants. A) speciation B) regeneration C) sexual reproduction D) asexual reproduction

Answers

It's Sexual Reproduction.

The organic chemicals that help cell membranes to conserve internal fluids are _____.

Answers

The organic chemicals that helpcell membranes to conserve internal fluids are the phospholipids. They arecomposed of fatty acid, glycerol, phosphate group and a polar molecule. The phosphategroup and polar head region of the phospholipids is attracted to water whilethe fatty acid is repelled by water. They are a major component of the cellmembrane in which it encloses the organelles of the cell. It also limits whatenters and exits the cell because of its two heads.
\sf\ Answer:\ PHOSPHOLIPIDS

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. She sets up a tape measure and throws the yoyo 3 times. Her data are charted below.Throw Length of string (feet)
1 3
2 1.8
3 1.08


Jessa wants to find the sum of the length of string after 10 throws. Choose the answer that shows the sum of the lengths rounded to the nearest hundredth.

A. 0.03 foot
B. 2.50 feet
C. 7.50 feet
D. 7.45 feet

Answers

The general formula for a geometric sequence can be written as: 
a(n) = a r^(n-1) 

a = first term = 3 
r = common ratio = 0.6 
n = number of terms = 10

substituting the values:

a(n) = 3 * (0.6)^(10-1)
a(n) = 3 * (0.6)^9 
a(10) = 0.030

Sum of the ten terms = 3 (1-0.6^10)/1-0.6
                                   = 2.98/0.4
                                   = 7.45

Answer:

7.45

Explanation:

took the test

List in the order the major blood vessels, chambers, and valves through which a drop of blood must pass in traveling from a vena cava

Answers

Deoxygenated blood flows from the vena cava, into the right atrium, it's then pumped through the atrio-ventricular valves and into the right ventricles. It is then pumped from the right ventricles through the semi-lunar valves to the pulmonary artery where deoxygenated blood is carried to the lungs

Can someone tell me the menstrual cycle :)

Answers

Menstrual Cycle is a monthly time when a overy releases an egg to be fertilized by sperm. 

Auroras occur in the _______.a. troposphere
b. stratosphere
c. mesosphere
d. thermosphere

Answers

Auroras occur in the "thermosphere".



The thermosphere lies between the exosphere and the mesosphere.It is a district of expanding temperature in Earth's climate that is situated over the mesosphere.  

The thermosphere significantly helps in ensuring the earth and making space investigation and present day types of correspondence conceivable. It additionally supports and ensures life on the planet. It reuses water, retains the sun's energy, and makes a moderate temperature.  

The aurora (Northern Lights and Southern Lights) generally present in the thermosphere. It is a  natural electrical marvel described by the presence of streamers of rosy or greenish light in the sky, particularly close to the northern or southern attractive shaft. The impact is caused by the communication of charged particles from the sun with iotas in the upper atmosphere.

Auroras occur in the thermosphere. Therefore, the correct option is D.

The Northern Lights, or aurora borealis, and the Southern Lights, or Aurora Australis, are natural light displays that occur in Earth's upper atmosphere. The thermosphere, the uppermost part of Earth's atmosphere, is where most of them occur. Several hundred kilometers to about 80 kilometers (50 mi) above the Earth's surface is where the thermosphere begins. Auroras are generated when charged solar particles such as electrons and protons interact with Earth's magnetic field and strike atoms and molecules in the thermosphere.

Therefore, the correct option is D.

Learn more about Auroras, here:

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