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scoray [572]
3 years ago
6

A farmer is trying to determine why some weeds sprayed with weed killer do not die. to begin a scientific investigation of this

issue, what would be the first step for the farmer?
Biology
2 answers:
katrin [286]3 years ago
8 0

Draw conclusions about the plants in his field.

blagie [28]3 years ago
4 0
The first thing that the farmer should do is formulate a hypothesis in which he will make intelligent guesses on what is happening or develop a theory of which would explain what is happening. It is the first step in scientific investigation in order to formulate questions of why weeds that are sprayed does not die. After this, it is only then the farmer should experiment and after that, he should finalize his findings as it is its conclusion to the problem.
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Water is essential for the growth of crop plants. But excessive supply of water should be avoided. Give reason.
Ira Lisetskai [31]

Answer:

Soil can become waterlogged. The water can cut off the air supply to the roots and to the organisms that live in the soil. If the roots do not receive enough oxygen, the plants will die because they rely on oxygen to complete photosynthesis.

Explanation:

7 0
3 years ago
Read 2 more answers
If, on average, 46% of the loci in a species' gene pool are heterozygous, then the average homozygosity of the species should be
ludmilkaskok [199]

the correct answer would have to be c

4 0
4 years ago
Do dolphins understand the difference between seeing another dolphin in front of them, and seeing their own reflection? *
uysha [10]

Answer:

um no I dont think so

Explanation:

3 0
3 years ago
Describe the role of each of the following mechanisms in determining an individual’s eating habits and body weight.• Biological
alina1380 [7]

Answer:

Explanation:

1. Biological Mechanism: This are things like hunger, appetite and taste of the individual. Every individual is unique and one's hunger and appetite determines how often and how much they eat respectively. The higher these are, the more likely they are to consume calories. The taste is even more relevant as it speaks to what kind of food the individual likes, is it high calorie or low? Is it fat rich or low fibre? Etc.

Learning Mechanism: This are relevant mostly to students. Studying patterns greatly affect eating habits and body weight. Time of sleep, stress patterns, balanced diet and even regularly missing a meal for a study group directly affects metabolism patterns. For instance, eating breakfast regularly boosts metabolism, and is good for weight balance.

Reinforcement: Certain foods are quite addictive and so reinforce their consumption by adjusting brain chemistry.

Body or Brain Chemistry: Studies done on Obesity have found that some individuals are susceptible to environmental food cues than others due to differences in brain chemistry that make eating more habitual and less rewarding. This means that not only do they eat habitually but that it is less satisfying. This is a major contributor to obesity. These Peculiarities in brain/body chemistry affect people's eating pattern and their weight.

Brain Structure Modeling: Uncontrolled eating is also positively associated with gray matter volume (GMV) of the cerebellum, and negatively associated with the Gray matter volume on the left side of the anterior cingulate cortex, middle cingulate cortex, and supplementary motor areas. What this means is that individuals with more gray matter volume in these areas of their brains are more presdusposedto excessive eating habits and this might lead to weight problems and it's related health risks.

Genetic Factors: These factors are genetic predisposition to eating disorders, genetic influence on taste, meal selection and appetite processing.

These also influence how much the individual ends up eating and what type of food they eat.

Cultural Factors: This include type of food found in one's culture, polite eating habits there, the ingredients used for cooking said culture. It also encorporatea the individual's class as food poverty is known to exist affecting about 14 million people. There's also available and affordability of healthy food options. This affects both eating habits and weight as less healthy junk food are more likely to be calorie dense.

PS: The eating pattern and body weight factors are closely correlated as the eating pattern explains what the weight situation might mirror.

6 0
3 years ago
What route is used to make and export proteins from the cell?
laila [671]

Answer:

option B

Rough endoplasmic reticulum → Golgi apparatus → plasma membrane

Explanation:

The pathway used to make and export proteins from the cell is rough endoplasmic reticulum which have ribosomes. After which it is transferred to golgi apparatus. The golgi apparatus process it and form vesicle. These vesicles are then transported to plasma membrane.

5 0
3 years ago
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