Answer the following question given this paragraph: that the weak interaction could change quark flavor. It should also change neutrino flavorthat is, any type of neutrino could change spontaneously into any other, a process called neutrino oscillations. However, this can occur only if neutrinos have a mass. Why? Crudely, because if neutrinos are massless, they must travel at the speed of light and time will not pass for them, so that they cannot change without an interaction. In 1999, results began to be published containing convincing evidence that neutrino oscillations do occur. Using the Super-Kamiokande detector in Japan, the oscillations have been observed and are being verified and further explored at present at the same facility and others. Neutrino oscillations may also explain the low number of observed solar neutrinos. Detectors for observing solar neutrinos are specifically designed to detect electron neutrinos e produced in huge numbers by fusion in the Sun. A large fraction of electron neutrinos. Q: A spontaneous change process called neutrino oscillations can occur only if neutrinos have what property? Choices: - velocity - temperature - color - mass A:
mass
(Question)
Answer the following question given this paragraph: The first organisms were made of only one cell ( Figure below ). The earliest cells were prokaryotes . Prokaryotic cells are surrounded by a cell membrane, but they do not have a nucleus. The cells got their nutrients directly from the water. The cells needed to use these nutrients to live and grow. Q: The earliest cells were called what? Choices: - eukaryotes - carbohydrates - microcytes - prokaryotes A:
(Answer)
prokaryotes
Ques: Answer the following question given this paragraph: In species with sexual reproduction, each cell of the body has two copies of each chromosome. For example, human beings have 23 different chromosomes. Each body cell contains two of each chromosome, for a total of 46 chromosomes. You can see the 23 pairs of human chromosomes in Figure below . The number of different types of chromosomes is called the haploid number. In humans, the haploid number is 23. The number of chromosomes in normal body cells is called the diploid number. The diploid number is twice the haploid number. In humans, the diploid number is two times 23, or 46. Q: In species with sexual reproduction, each cell of the body has two copies of each what? Choices: - cell - rna strand - dna strand - chromosome A:
Ans: chromosome
(Q).
Answer the following question given this paragraph: Mercury is extremely hot and has a liquid metal core. Q: What kind of core does mercury have? Choices: - solid metal - gas - dense metal - liquid metal A:
(A).
liquid metal
Ques:Answer the following question given this paragraph: Q: In certain populations, some of the chromosomes have become what? Choices: - elongated - composed - dissolved - fused A:

Ans:fused
Answer the following question given this paragraph: Most reptiles reproduce sexually and have internal fertilization. Their eggs are amniotic, so they can be laid on land instead of in water. Reptiles do not have a larval stage, and their hatchlings are relatively mature. Reptile parents provide little if any care to their young. Q: Most reptile eggs can be laid on land, not in water and they are called what? Choices: - aqueous - umbilical - Transitional - amniotic A:
amniotic