Biology, 28.08.2019 06:30 milkshakegrande101
Ahalf-life of a radioactive substance is the amount of time needed for one half of to decay into a stable isotope.
a) the neutrons in the nuclei
b) its beta particles
c) the nuclei in a sample
Answers: 2
Biology, 21.06.2019 13:30
Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.
Answers: 1
Biology, 22.06.2019 00:00
Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.
Answers: 1
Biology, 22.06.2019 10:00
Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
Answers: 2
Biology, 22.06.2019 11:00
In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds?
Answers: 2
Ahalf-life of a radioactive substance is the amount of time needed for one half of to decay into a...
Mathematics, 24.08.2021 08:10
Mathematics, 24.08.2021 08:10
Mathematics, 24.08.2021 08:10
Mathematics, 24.08.2021 08:10
Mathematics, 24.08.2021 08:20
English, 24.08.2021 08:20
Social Studies, 24.08.2021 08:20
Mathematics, 24.08.2021 08:20
Mathematics, 24.08.2021 08:20
World Languages, 24.08.2021 08:20
History, 24.08.2021 08:20
Mathematics, 24.08.2021 08:20
English, 24.08.2021 08:20