Every time a child visited a cousin who has two
cats, the child’s eyes turned red, itched, and...
Biology, 24.10.2019 23:43 reeseleprell4141
Every time a child visited a cousin who has two
cats, the child’s eyes turned red, itched, and
began to water. then, the child began to have
trouble breathing. it is most likely that the child
reacted this way because
(1) normally harmless cat antigens stimulated
the immune system
(2) it is difficult for the respiratory system to
filter cat antigens out of the inhaled air
(3) cat antigens are a health hazard, since they
always cause disease
(4) cat antigens stop the immune system from
making antibodies, so bacteria cause these
responses
Answers: 2
Biology, 22.06.2019 00:10
Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase
Answers: 1
Biology, 22.06.2019 07:40
Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one
Answers: 1
Biology, 22.06.2019 09:00
Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm
Answers: 1
Mathematics, 12.01.2021 23:00
Mathematics, 12.01.2021 23:00
Mathematics, 12.01.2021 23:00
Biology, 12.01.2021 23:00
Mathematics, 12.01.2021 23:00
Mathematics, 12.01.2021 23:00
English, 12.01.2021 23:00
Social Studies, 12.01.2021 23:00
Geography, 12.01.2021 23:00
Mathematics, 12.01.2021 23:00