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3 years ago

How can genetic engineering help improve crop production?

2 answers:

8 0

So the way I'd solve this problem would be to go through each answer and ask myself why it is true/not true. For A, it is true that engineers try to breed disease from their plants. And from just a common sense point of view, wouldn't you want to rid your plants of disease? For B, it doesn't make sense to get rid of watering entirely. That's one of the fundamental things of a plant, besides sunlight and CO2. For C, you can't control the weather, and pests can be stopped using pesticides, which are cheaper than breeding a new plant type. For D, it doesn't make sense to want your plants to grow better from herbicides. So, my answer would be A as it is the best fitting option

xeze [42]3 years ago

3 0

Answer:

The answer is A on edgen

Explanation:

You might be interested in

Sully uses a battery and a coil of wire to create an electromagnet. Using the same materials, if he wants to increase the streng

Oxana [17]

Increase.
I hope this helps :)

8 0

3 years ago

Read 2 more answers

A thread holds a 1.5-kg and a 4.50-kg cart together. After the thread is burned, a compressed spring pushes the carts apart, giv

maksim [4K]

Answer:

c. 8.67 cm/s

Explanation:

From the law of conservation of momentum,

Total momentum before the thread was burned = Total momentum after was burned

mu + m'u' = mv + m'v'...................... Equation

Where m = mass of the heavier cart, m' = mass of the lighter cart, u = initial velocity of the bigger cart, u' = initial velocity of the smaller cart, v = final velocity of the bigger cart, v' = final velocity of the smaller cart.

Note: Both cart where momentarily at rest, as such u = u' = 0. i.e the total momentum before the thread was burn = 0

And assuming the left is positive,

We can rewrite equation 1 as

mv + m'v' = 0............................................ Equation 2

Given: m = 4.5 kg, m' = 1.5 kg, v' = 26 cm/s

Substitute into equation 2,

4.5v + 1.5(26) = 0

4.5v + 39 = 0

4.5v = -39

v = -39/4.5

v = -8.67 cm/s.

Note: v is negative because it moves to right.

Hence the velocity of the 4.5 kg cart = 8.67 cm/s.

The right option is c. 8.67 cm/s

7 0

3 years ago

Kepler was able to mathematically model that what shape was the most likely orbital shape for objects around the sun?

katovenus [111]

The answer is Elliptical orbit.

Hope this helps!

3 0

4 years ago

A proton and an alpha particle (q = +2e, m = 4 u) are fired directly toward each other from far away, each with an initial speed

stich3 [128]

Answer:

Distance of closest approach, $r=1.91\times 10^{-14}\ m$

Explanation:

It is given that,

Charge on proton, $q_p=e$

Charge on alpha particle, $q_a=2e$

Mass of proton, $m_p=1.67\times 10^{-27}\ kg$

Mass of alpha particle, $m_a=4m_p=6.68\times 10^{-27}\ kg$

The distance of closest approach for two charged particle is given by :

$r=\dfrac{k2e^2(m_p+m_a)}{2m_am_pv_p^2}$

$r=\dfrac{9\times 10^9\times 2(1.6\times 10^{-19})^2(1.67\times 10^{-27}+6.68\times 10^{-27})}{2\times 6.68\times 10^{-27}\times 1.67\times 10^{-27}(0.01\times 3\times 10^8)^2}$

$r=1.91\times 10^{-14}\ m$

So, their distance of closest approach, as measured between their centers $1.91\times 10^{-14}\ m$ . Hence, this is the required solution.

4 0

3 years ago

When a sound wave travels through air, how is this air affected by its passage

grandymaker [24]

Sound is a mechanical wave <span>that results from the back and forth vibration of the particles of the medium through which the sound wave is moving. If a sound wave is moving from left to right through air, then particles of air will be displaced both rightward and leftward as the energy of the sound wave passes through it. The motion of the particles is parallel (and anti-parallel) to the direction of the energy transport. This is what characterizes sound waves in air as longitudinal waves.</span><span>
</span>

6 0

3 years ago