Q: Q: What are considered to be the most basic concepts in the field of physical science? Read this paragraph and choose the correct option from the provided answers: Matter and energy are the most basic concepts in physical science. Watch this video about matter and energy, and then answer the questions below. Choices: - change and energy - energy and motion - force and matter - matter and energy A:
A: matter and energy

Q: Q: What process of gradual change is the source of diversity of life on earth? Read this paragraph and choose the correct option from the provided answers: The Diversity of Life The fact that biology, as a science, has such a broad scope has to do with the tremendous diversity of life on earth. The source of this diversity is evolution, the process of gradual change during which new species arise from older species. Evolutionary biologists study the evolution of living things in everything from the microscopic world to ecosystems. The evolution of various life forms on Earth can be summarized in a phylogenetic tree (Figure 1.17). A phylogenetic tree is a diagram showing the evolutionary relationships among biological species based on similarities and differences in genetic or physical traits or both. A phylogenetic tree is composed of nodes and branches. The internal nodes represent ancestors and are points in evolution when, based on scientific evidence, an ancestor is thought to have diverged to form two new species. The length of each branch is proportional to the time elapsed since the split. Choices: - variation - creation - development - evolution A:
A: evolution

Q: Q: What happens to the volume of the gas when temperature increases but amount of gas and its pressure are constant? Read this paragraph and choose the correct option from the provided answers: There are other measurable characteristics of a gas. One of them is temperature (T). Perhaps one can vary the temperature of a gas sample and note what effect it has on the other properties of the gas. Early scientists did just this, discovering that if the amount of a gas and its pressure are kept constant, then changing the temperature changes the volume (V). As temperature increases, volume increases; as temperature decreases, volume decreases. We say that these two characteristics are directly related. A mathematical relationship between V and T should be possible except for one thought: what temperature scale should we use? We know from Chapter 2 "Measurements" that science uses several possible temperature scales. Experiments show that the volume of a gas is related to its absolute temperature in Kelvin, not its temperature in degrees Celsius. If the temperature of a gas is expressed in kelvins, then experiments show that the ratio of volume to temperature is a constant:. Choices: - nothing - volume remains constant - volume decreases - volume increases A:
A: volume increases

Q: Q: Organs of what male biological system include the penis, testes, and epididymis? Read this paragraph and choose the correct option from the provided answers: Male Reproductive Structures. Organs of the male reproductive system include the penis, testes, and epididymis. Several ducts and glands are also part of the system. Do you know the reproductive functions of any of these structures?. Choices: - immune system - romantic system - circulatory system - reproductive system A:
A: reproductive system