The main predators of field mice in a certain ecosystem are rattlesnakes and foxes. Suppose humans begin building neighborhoods in the ecosystem, driving out many of the indigenous rattlesnakes and foxes. What will most likely happen to the field mice's population?
Diabetes may be defined as the medical condition in which the normal blood sugar level of the individual is not maintained. Two main types of diabetes are diabetes insipidus and diabetes mellitus.
The individual should help each other if some one is suffering from diabetes. The coworker is diabetic and has lost the ability to swallow and sit. The one should call on the number 911. As 911 is the emergency helpline number and provide medical help to the coworker.
The propositions are: A. an electron is given offB. an electron is absorbed and turned into a neutronC. an atom splits into two piecesD. an alpha particle combines with a small atom to make a larger one
Radioactive nuclei emit three kinds of radiation called by alpha, beta, and gamma, which are respectively: helium nuclei, electrons (and positrons), and photons (with high energy). In alpha radioactivity, the nucleus seeks stability by emitting a nucleus of helium (two protons and two neutrons) called also an alpha particle.
based on the definition we can exclude A and B because alpha decay has nothing to do with electrons.D is false because the alpha particle is emitted and does not combine So, C is the right answer since the radioactive atom will split into an alpha particle and a smaller atom.
The correct answer is descent from a common ancestor.
Homologous structures are the structure which is similar in appearance but perform different functions in a different organism.
The wing of a bat, leg of an alligator and arm of a human, they all look similar in appearance with same type and number of bones but they all perform different functions in them.
The same type and number of bones show that they all have come from the same structure of the last common ancestor or their ancestor was common. This type of evolution is called divergence evolution and provides a piece of evidence to the theory of evolution given by Charles Darwin that "all species arises from same ancient common ancestor also called descent from a common ancestor". This proves that the evolutionary history of life forms a branching tree.
Thus, descent from a common ancestor is the correct answer.