Which feature is shown ONLY by higher invertebrates, as compared to lower invertebrates? Bilateral symmetry True coelom Three germ layers
What did Charles Darwin discover as a result of his experiments with breeding pigeons? A. Desirable traits can be selected for and bred in offspring. B. Humans can create new species through selective breeding. C. Dogs and plants can be bred the in same way as pigeons. D.The pigeons had distinctive traits that were passed on to offspring.
Which part of a scientific argument must be supported by valid data? a. claim b. evidence c. reasoning d. theory
The food for dicot embryos is stored in the endospermcotyledons while food for monocot embryos is stored in the cotyledonsendosperm .
Which human activity negatively affects the stability of the environment? A.Dumping pollutants into the ocean B.Recycling plastic C.Creating wildlife reserves D.Planting trees
Mantle material rises in convection currents because heated materials become more dense. truth or false
Which of the following are parts of a feedback loop? sensory receptors an integrating center effectors all of the above
Stars are held together by a. ionic forces. c. electrical forces. b. magnetic forces. d. gravitational forces.
What role does your heart play in delivering oxygen to your body cells? The heart breaks down carbon dioxide into carbon and oxygen. The heart pumps oxygen-rich blood to your body cells. The heart pumps oxygen through the alveoli, which deliver it to body cells. The heart takes in oxygen from the environment and delivers it to cells.
Which two cell parts are most likely found in both types of cell? cell wall and cell membrane lysosome and vacuole vacuole and centriole lysosome and chloroplast
A waste product of respiration in animals that is used by plants to carry out photosynthesis is a. carbon dioxide. c. calcium carbonate. b. carbon monoxide. d. sodium bicarbonate.
In angiosperms, what is the name of the outer epidermal layer that protects the plant body? Vascular tissue Dermal tissue Ground tissue
Matter is needed to transfer thermal energy by a.conduction. b.convection. c.radiation. d.both a and b
Which of the following conditions will result in the rabbit population pictured in the graph below? 2028-02-04-01-00_files/i0110000.jpg a. ample land, cold springs b. little land, normal conditions c. moderate land, hot summers d. ample land, harsh winters Please select the best answer from the choices provided A B C D
Which of these is true of the materials making up the buffy coat in centrifuged blood? which of these is true of the materials making up the buffy coat in centrifuged blood? they are less dense than both erythrocytes and plasma. they are denser than erythrocytes but less dense than plasma. they are intermediate in density between erythrocytes and plasma. they are denser then plasma and erythrocytes?
Which best describes homeostasis?. a Specialized cells work independently to perform their specific functions.. b Specialized cells work only as a team to perform the functions of the body.. c Specialized cells work independently to perform specific functions and also as a team to perform the functions of the body.. d Specialized cells in the body perform all the functions that are necessary to maintain homeostasis.
What tissue type has polarity and is avascular? what tissue type has polarity and is avascular? muscle connective tissue epithelium nervous tissue?
What would most likely happen if there were no condensation stage in the water cycle ? A.water could not convert from a gas to a liquid B.water could not convert from a liquid to a gas C.water could not convert from transpiration to evaporation D.water could not convert from precipitation to evaporation
Which best describes the direction of heat? (a) from a substance with no thermal energy to a substance with high amounts of thermal energy (b) from a substance with less thermal energy to a substance with more thermal energy (c) from a cooler substance to a warmer substance (d) from a warmer substance to a cooler substance
Who discovered the monomers of nucleic acids? Phoebus Levene James Watson, Francis Crick, and Rosalind Franklin Friedrich Miescher Gerardus Johannes Mulder and Jöns Jacob Berxelius
Which of the following correctly compares the benefits of two forms of renewable energy? Biomass energy and geothermal energy are both clean energy sources. Geothermal energy and natural gas are both clean energy sources. Solar power and wind power are both clean energy sources. Natural gas and solar power are both clean energy sources
In what way do investigations build scientific knowledge? The results of investigations lead to questions that cannot be tested. They reflect the opinions and social values of scientists, ensuring valid information. The results of investigations lead to new questions, which lead to new investigations. They are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.
Why do classification systems change over time? A. Scientists find new evidence in their studies. B. Scientists use old methods of classification. C. Scientists repeat experiments and find no changes. D. Scientists find similar evidence to previous work.
The greenhouse gas methane is released by cattle as a Product of their metabolism what effect would increase in cattle ranching be expected to have a c product of their metabolism what effect would increase in cattle ranching be expected to have on climate