The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in Homo habilis. Even though they are species<span> of genus </span>Homo, they are not similar to people nowadays at all. <span>In </span>palaeoanthropology, these species were the first ones who left Africa and started to move and spread along Eurasia, which is one the main facts and characteristics of Homo habilis.
Producers! they are plants that all the animals feed off of, hence creating a food web/chain.
These brain activity during stage 2 of sleep are called
sleep spindles. These are sudden bursts of brain activity from the reticular nucleus of the thalamus. In an EEG tracing, these look like fluctuations of voltage (see attached image). Sleep spindles do represent time periods wherein the thalamus inhibits conscious processing hence keeping the person in the asleep state.
<span>Phenotype depends on two alleles: one from mom and one from dad. If a puppy inherited the dominant trait of hair from one or both parents, it will have hair. If it inherited recessive traits from both parents, it will be hairless.</span>
Answer:
The answers are b) Disinfection can occur by physical or chemical mean, c) Disinfectants are used to inhibit or destroy pathogens, d)Endospores and viruses can resist disinfectant treatment and e)Disinfection can be used to treat work surfaces as well as workers (i.e., washing hands)
Explanation:
Disinfection is the process that involves the elimination of microorganisms through the use of chemical or physical agents. Among the physicists are heat, radiation, drying, etc. Chemical disinfectants are oxidizing substances that are used in solution and can be combined with detergents or some organic substances.
However, endospores and some viruses are very resistant to both physical and chemical disinfection. In endospores, this resistance is due to the fact that the protective layer of the spore is impermeable to any oxidizing agent. In viruses, the cytoplasmic membrane is composed of two layers, a hydrophobic and a hydrophilic zone, this influences the resistance to disinfectants.