Answer:
b) had been created by divine intervention a few thousand years before.
Explanation:
In Darwin’s time, most people assumed that all species were brought into being at the same period or age and it was the usual believe. Therefore, Darwin’s ideas which he got from his voyage brought new understanding to biology.
The Voyage of the Beagle
In 1831, Darwin (22 years old) journeyed for a scientific exposition on the HMS Beagle ship. He observed and collected specimens of plants, animals, rocks, and fossils wherever the expedition was ashore. The Figure attached showed his voyage journey.
Darwin’s Observations
His observations helped him form his theory of evolution. Lets consider:
The great diversity of life.l which was seen in his visit to tropical rainforests and other new habitats where he observed many plants and animals not known to man.
His idea that living things—like Earth’s surface—change over time was from him digging up fossils of gigantic extinct mammals, e.g. the ground sloth proving that organisms differed from their past forms.
Answer:
Dependent and independent variables are variables in mathematical modeling, statistical modeling and experimental sciences. Dependent variables receive this name because, in an experiment, their values are studied under the supposition or demand that they depend, by some law or rule, on the values of other variables.
Answer: They have both RNA and DNA
Explanation: Rickettsiaceae possess both nucleic acids RNA and DNA, this is a distinctive characteristics of the organism. They are pleomorphic organisms and are mostly gram-negative organisms.
Rickettsiaceae are infectious to arthropods therebygiving making them an intermediate host or carriers and human can be infected via biting from infected arthropods.
Answer:changes in environmental conditions
Explanation: The kingdom protista includes algae with chlorophyll and are autotrophic in nutrition.They may be Unicellular or multicelllular.some are colonial and others are filamentuous.some protista undergoes both sexual and asexual reproduction eg chlamydomonas and ulothrix.
In asexual reproduction,the cell divides by mitosis;first in the nucleus and chloroplast and later in the cytoplasm.
sexual reproduction occurs when conditions are quite unfavourable.This is essential because recombination of genes occurs during sexual reproduction ,thus leading to genetic variation.the zygote formed may remain in a dormant state until conditions becomes favourable
Answer:
If the liver is placed in an acidic solution, then the reaction rate will decrease.
