Biology, 25.05.2021 21:30 ariellopez2301
What material is rare in the atmosphere of mars and venus, but common in the atmospheres of earth
Answers: 2
Biology, 21.06.2019 16:00
Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove
Answers: 2
Biology, 21.06.2019 23:10
Afamily has a y-linked disease that affects the father. what is the chance of a male offspring inheriting the same disease? oa. 100% ob. 50% oc. 25% d. 0%
Answers: 1
Biology, 22.06.2019 03:30
Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent
Answers: 1
Biology, 22.06.2019 08:30
What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons
Answers: 1
What material is rare in the atmosphere of mars and venus, but common in the atmospheres of earth...
SAT, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
History, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
English, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
Physics, 24.03.2021 23:40
English, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
Mathematics, 24.03.2021 23:40
English, 24.03.2021 23:40
History, 24.03.2021 23:40