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Yanka [14]
3 years ago
15

Selective herbicides are only able to kill specific types of plants and often leave some weeds in the field to continue to grow.

Why would a farmer choose to use a selective herbicide?
Biology
2 answers:
Norma-Jean [14]3 years ago
8 0
Because they dont want to kill the grass or the plants that they want. but only to kill the plants its meant for 
Solnce55 [7]3 years ago
3 0

Answer & Explanation:

Suppose you are working as a farmer, and you want to grow corn - it's the only crop you want to grow. Of course, you'd have to make sure there isn't anything else staying with that corn, right? But why? There are many reasons as to why a farmer would choose to use a selective herbicide. One is that it reduces competition. Plant species living in the same area and using the same resources are going to compete for those resources; hence, no matter how much water you give to your corn, if there's something else using it, then your preferred crops aren't going to get enough of it. This may also determine the quality of your corn, and the amount of yield it provides. Sometimes, you might also want to get rid of annoying plants that get into your way of harvest as well. Killing a certain plant species also ensures that you have enough space for your preferred crop, as well as guaranteeing that unwanted plants won't disperse their seeds around the area and take up more space in the future.

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Forks over knives movie
slava [35]

Answer:

1. Yes

2. No

3. Yes

Explanation:

Yes, the elimination of the animal based foods decreases and reduce chronic diseases in many developed countries such as US and England etc. but meat is also very necessary for animal diet due to the presence of high protein content.

No, USDA does not promote the intake of an animal-based diet. this agency promote the intake of nutritious food in a limited amount so it does not cause any disease. They recommend the eating of Grains, Fruits, Protein, Foods, Vegetables and Dairy products in a limited amount.

Yes, the main cause of obesity in Americans is due to two reasons, first cause is the intake of meat in large amount and second cause is the decline in physical activity.

The success of the patients was due to combined effect of increased amount of fruits/vegetables and plants and the elimination of meats. By using these two element the patient will quickly recovered.

8 0
3 years ago
What is a small what is a small structure within the cell that builds proteins?
Andreas93 [3]
The ribosomes build proteins.
5 0
3 years ago
The minimum amount of energy needed to start a chemical reaction is known as:
nadya68 [22]

Answer:

The correct option is B. Activation energy

Explanation:

The activation energy is usually used to designate the minimum energy necessary for a given chemical reaction to occur, that is, the basic requirement for the reaction to proceed.

For a reaction to occur between two molecules, they must collide in the correct orientation and have a minimum amount of energy. As the molecules approach, their electron clouds are rejected. This requires energy (activation energy) and comes from the heat of the system, that, is, from translational, vibrational energy, etc of each molecule. If the energy is sufficient, the repulsion is overcome and the molecules are close enough for a rearrangement of the bonds of the molecules.

The concept of Activation energy was introduced by Arrhenius in 1889. Arrhenius suggested that molecules must prossess a minimum amount of energy to react. That energy comes from the kinetic energy of the clliding molecules. Kinetic energy serves to cause reactions, but if the molecules move very slowly, the molecules will only bounce when they collide with other molecules and the reaction does not happen. In order for the molecules to react, they must have a total kinetic energy that is equal to or greater than a certain minimum value of energy called activation energy.

6 0
3 years ago
Which describes how a turbine works to produce energy for electricity? A. The turbine collects wind energy to make electricity d
vovikov84 [41]

Answer:

the answer is A.

Explanation:

6 0
3 years ago
Phylogenetic trees constructed from evidence from molecular systematics are based on similarities in _____.
hoa [83]

Answer:

mutations to homologous genetic loci

Explanation:

Phylogenetic tree, which is a diagrammatic representation of evolutionary relationship among organisms, can be constructed from evidence from molecular systematic with regard to the similarities in the mutations to homologous genes.

Homologous genes are genes that are inherited by two species from a common ancestor having similar DNA sequence. An example of homologous gene is Orthologous gene, which is said to have be brought about by speciation.

3 0
3 years ago
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