Biology, 16.10.2019 05:30 lupitasgirl3326
In aquatic ecosystems, phytoplankton and other photosynthetic organisms appear in the upper layer of the water, but not deeper layers. which statement explains this distribution?
a) the deeper layers are too dark for photosynthesis to occur.
b) the deeper layers are too cold for photosynthesis to occur.
c) the deeper layers have too little oxygen for photosynthetic organisms to survive.
d) the deeper layers have too much carbon dioxide for photosynthetic organisms to survive.
Answers: 3
Biology, 22.06.2019 02:30
What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen
Answers: 1
Biology, 22.06.2019 02:30
What is the surface temperature of the ocean where hurricanes form? greater than 80 celsius approximately 27 celsius at least 76 celsius less than 10.5 celsius
Answers: 1
Biology, 22.06.2019 10:30
In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.
Answers: 2
Biology, 22.06.2019 11:30
If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm
Answers: 1
In aquatic ecosystems, phytoplankton and other photosynthetic organisms appear in the upper layer of...
Computers and Technology, 03.07.2019 02:00
History, 03.07.2019 02:00
History, 03.07.2019 02:00
Mathematics, 03.07.2019 02:00
History, 03.07.2019 02:00
Mathematics, 03.07.2019 02:00
Mathematics, 03.07.2019 02:00
Biology, 03.07.2019 02:00
Mathematics, 03.07.2019 02:00
Mathematics, 03.07.2019 02:00
English, 03.07.2019 02:00