The correct answer is silicon (SiO4), oxygen (O2), iron (Fe) and magnesium (Mg).
Ferromagnesium silicates are minerals in which cations of iron and magnesium form essential chemical components on the silicate structure (contains SiO4 tetrahedra). The minerals from this group include the olivines, pyroxenes, amphiboles, and the micas biotite and phlogopite.
Answer: the answer is b, abiotic
Explanation: Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms and Abiotic factors include water, sunlight, oxygen, soil and temperature.
Receptors which provide animals with information from the external environment are located in ears, tongue, eyes, and the nose. These are all receptors that can be found in our sensory organs and provide us with feedback from our nearby environment and the stimuli on which we should be alerted towards.
True because since there are not many ways for them to erode they can thrive
Answer:
d. 1/2
Explanation:
According to this question, PKU (Phenylketonuria) is a recessive condition in humans. A normal human must possess at least a dominant allele in the gene.
In a situation where two normal parents produce a child with PKU. This means that both parents are heterozygous for the condition i.e Pp × Pp. Hence, the heterozygous male (Pp) will produce gametes in the following proportion: P (1/2) and p (1/2).
This means that the probability that a sperm from the father will contain the PKU allele (p) is 1/2 or 50%
