Questions and answers by

scienze

Questions (27)

Select the most specific taxonomic group that includes all animals that have backbones.A) the phylum Chordata B) the class Aves
1. 1 answer
2. 60 views
What term describes one type of organism?
1. 1 answer
2. 73 views
What trait differentiates lilacs from pine trees?A) Lilacs are vascular plants. B) Pine trees have leaves. C) Lilacs have
1. 1 answer
2. 130 views
What is a generic term for a tool used to visualize relationships in a classification system
1. 5 answers
2. 101 views
Humans and bacteria are similar in that theyA) are multicellular B) are unicellular C) grow and reproduce D) produce energy i
1. 1 answer
2. 53 views
What is moss classified as
1. 1 answer
2. 100 views
What happened to the Aspen Trees when the wolves returned to Yellowstone?
1. 1 answer
2. 59 views
True or False?Wolves made the water quality of rivers, streams, and lakes better in Yellowstone.
1. 1 answer
2. 53 views
which car has the greatest efficiency?a 1,200 kg car that travels 15 km per liter of fuel? a 900 kg car that travels 20 km per
1. 1 answer
2. 186 views
A person raises a box with a weight of 50 newtons by 0.5 meter. How much work in joules does the person do in this action?
1. 1 answer
2. 137 views
A soccer player kicks a ball, applying a force of 1,000 newtons over a distance of 0.2 meter. The ball travels 50 meters down
1. 1 answer
2. 212 views
Michael is probably going to become an engineer. He spends most of his free time building gadgets.Which of those sentences is a
1. 3 answers
2. 70 views
Sarah is learning about heat transfer in science class. She observes a pot of water boiling on a stove.Which heat transfer
1. 1 answer
2. 127 views
Samantha is conducting an experiment to investigate how the amount of sunlight affects the growth of plants. She decides to
1. 1 answer
2. 111 views
Which option is an example of heat transfer by conduction?A) Air getting warm from a radiator B) Pavement heating up in the sun
1. 1 answer
2. 79 views
Use the table of temperatures measured in two areas of a house to answer the question.Area: Downstairs- Temperature: 22C Area:
1. 1 answer
2. 99 views
use the table of temperatures from several areas to complete the statement.Area X = 22C Y=18C Z=18C Air will move from a) area z
1. 3 answers
2. 106 views
What do elements in the same column (group) on the periodic table have in common?* They have the same number of protons. They
1. 7 answers
2. 83 views
Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O) to form 10 molecules of of carbon dioxide (CO2). According to
1. 5 answers
2. 225 views
2H2 + O2 +2H2OThere are four atoms of Hydrogen (H) before the reaction. How many atoms of hydrogen are present after? 5 4 8 2
1. 1 answer
2. 90 views
NaHCO3 -> NC2H3O2 -> NaC2H3O2 -> H2O -> CO2A student mixes baking soda (NaHCO3) and acetic acid (HC2H3O2) to produce a chemical
1. 1 answer
2. 113 views
Which is most likely to occur during a chemical reaction?Mass is conserved. New atoms are created. The original substance
1. 1 answer
2. 71 views
4Fe -> 3O2 -> 2Fe2 -> O3What happens to the atoms of Fe and O2 during the reaction?
1. 3 answers
2. 110 views
A scientist heats 30 grams of calcium carbonate (CaCO3) in the chemical reaction shown. CaCo3 -> CO2 -> CaO.What is the total
1. 1 answer
2. 141 views
Scientists have discovered a new planet. The planet is in a solar system whose star is similar in size to the sun and is about
1. 1 answer
2. 103 views
what happens to the impact of gravity between earth and moon if the moon grows two sizes?
1. 1 answer
2. 76 views
a student makes a chart about galaxies and mentions that the universe consists of many galaxies such as the andromeda galaxy and
1. 1 answer
2. 142 views