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is fecundation in mammals internal or external fecundation in mammals is internal with copulation in the contemporary world human technology is able
how do placental mammals reproduceplacental mammals reproduce sexually they have internal fecundation and they are viviparous ie their embryo creates
do all mammals have a placentamammals of the monotreme group echidnas platypus are oviparous egg-laying and they do not have a placenta mammals of
what are the three major groups into which mammals are dividedthe three groups into which mammals are divided are monotremes or prototherian eg
what are the typical features of mammalsthe typical features of mammals are body more or less covered with hair presence of the diaphragm muscle that
light is able to travel through vacuumansin classical physics electromagnetic radiation light is the only kind of wave that doesnt need a medium for
question put the different types of light in order from lowest frequency to highest frequencyfeedback these are all instances of electromagnetic
questionwhat sources electromagnetic radiation aka light aka electromagnetic waves select the one best answeranswernote the significant distinction
q explain what is lightlight is certainly electromagnetic radiation but the expression electromagnetic radiation is by no means an explanation of
questiona wire loop as well as a bar magnet lie in one and the same horizontal plane the bar magnet is exterior of the loop the bar magnet is
how different are reptiles and birds concerning the maintenance of body temperature are birds rare in polar regionsreptiles are heterothermic ie they
what are the predominating chemical compounds respectively in eggshell white and yolkthe eggshell is essentially made of calcium carbonate the white
questiona long straight portion of wire carries an increasing current due northward due east of as well as very near the straight wire at the same
how do birds reproducebirds like each vertebrate have sexual reproduction their embryos develop within shelled eggs having extraembryonic membranes
what similarities do birds and reptiles share regarding external coverage reproduction and excretion regarding external coverage birds are same to
a bar magnet is overhanging north end up well above a vertical coil of wire the bar magnet is released and as it falls down toward the coil it falls
which is the type of nitrogen waste birds produce why does this feature besides being an adaptation to the terrestrial environment also mean an
a bar magnet is overhanging vertically above a closed coil of wire the bar magnet is unconfined it remainder vertical as it come near the coil falls
how is the circulatory system of birds characterizedbirds as every vertebrate have a closed circulatory system the heart is same to the mammalian
what is an example of a hypothesis which may explain why there is not a big representation of the class reptilia found in polar regionsbeings of the
where is the magnetic field because of a bar magnet strongestanswerthis is just an experimental
concerning the maintenance of body temperature how do beings of the class reptilia classifylike fishes and amphibians beings of the class reptilia
compared to amphibians what are the two reproductive novelties of beings of the class reptilia for the survival in dry environmentscompared to
how is reproduction done in beings of the class reptiliathese beings reproduce sexually by internal fecundation by means of copulation among male and
what is the path of the magnetic field at a point due east of a straight wire carrying a current due