1 Which of the following is a question about physiology? ( Concept 40.0)
SHOW HINT
Do salamanders and frogs have the same number of toes on their front feet?
Thing
Are there any living birds with claws on the ends of their wings?
How is blood pressure affected by physical activity?
Do baleen whales have teeth?
Is it true that apes do not have fleshy tails like monkeys?
2
Most cells are microscopic because at this small size,
Concept
40.1)
SHOW HINT

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.

Several billion years ago which gas was the least prevailant in the atmosphere