Answer:
3. Household wastes
2. Landfills
1. Agriculture
Explanation:
The groundwater is more and more contaminated, and there are numerous ways in which the contamination occurs. The causes of pollution mainly come from the human activities. The humans use all sorts of chemicals, fossil fuels, paints, and often there is waste from them, waste that is dumped into the drainage, and occasionally reaches the groundwater. The leaking of linings also manages to cause lot of damage, as very often it can reach the groundwater, causing heavily contamination of it. The agriculture, as much as it is needed, is a big polluter too, and the pollution mainly comes from the usage of pesticides, herbicides, and fungicides, which wash through the soil and end up in the groundwater.
An exoskeleton is the outer skeleton of an animal to protect them. An exoskelton is also called a shell.
Answer:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
Explanation:
Evolution, in genetic terms, involves a change in the frequency of alleles in a population over time. What are the sources of genetic variation? Three sources of genetic variation are mutation, genetic recombination during sexual reproduction and lateral gene transfer.
Answer:
This is not the best practice because the fever is a mechanism of the body against infection since it will raise the body temperature bacteria, which live well below 37 ° C, die, however it is noteworthy that by itself the fiber can not cure an infection but defenses are needed and must be treated with antibiotics.
In addition, in a small percentage of cases the fever becomes urgent. This is true. It is only true if it exceeds 42 ° C in a sustained manner.
Because they are not in charge of deciding the child's gender, males shouldn't accuse women of failing to deliver a male child for them. Everything is dependent on chromosomal fusion.
What is chromosol fusion?
Every now and then, chromosomes fuse. This fusion occurs as sperm and eggs develop, as pairs of chromosomes fold over each other and swap chunks of DNA. Sometimes two different chromosomes grab onto each other and then fail to separate. Scientists have observed both humans and mammals with fused chromosomes.
Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells.
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