Answer:
Evolution
Explanation:
Archaeologists have attemped to draw up an evolutionary history of humans using evidence of fossil skeletal fragments and cultural artifacts discovered with them. Hominidae family of man and pangidae family of anthropoid apes are thought to have evolved from proconsul or dryopithecus which lived about 20 milllion years ago. The hominidae gave rise to human species and pongidae gave rise to the present day anthropoid apes.
Answer: Start by planting a small amount of vegetables such as kale.
Explanation:
<u>Answer</u>:
The null hypothesis: the mean egg thickness is 0.2 mm 
The alternative hypothesis: the mean egg thickness is less than 0.2 mm 
In statistics, the null hypothesis states that there is no significant difference between the observed value and the mean thickness. The alternative hypothesis states is the opposite and states the scientist's "idea" behind the experiment. Here, it refers to the fact that due to DDT, the egg shell will be thinner compared to the mean value.
Answer:
silica
Explanation:
Diatoms are microscopic organisms. they have shell that is made from organic compounds and silica.Diatoms contain silica in their cell walls. This material is used industrially in the production of toothpastes, silver polishes, and swimming pool filters. Silica is used to remove stains and debris.
Answer:
Biogas is composed mostly of methane (CH4), the same compound in natural gas, and carbon dioxide (CO2).
Explanation:
