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shtirl [24]
3 years ago
12

A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants.

Biology
1 answer:
mixer [17]3 years ago
7 0

Answer:

B. a graduated cylinder to measure 30 mL of water for each plant daily

Explanation:

<em>Option A is incorrect because an electronic balance is used to measure the mass of an object and not the volume.</em>

<em>Option C is incorrect because a metric ruler is used to measure the dimension of objects and not the mass.</em>

<em>Option D is incorrect because a thermometer is used to measure temperature and not pH.</em>

The correct option is B. A cylinder is applicable in the measurement of volume of liquids.

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Svetach [21]

Answer:

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Explanation:

Birds as in penguins

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The ground is hard because it is frozen

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7 0
3 years ago
Explain why hydrogen atom can become either an ion or part of a molecule.
saveliy_v [14]
It can become an ion because it can lose or gain an electron. It can become a part of molecule because it can form covalent bond with other atoms to gain a full valence shell.

3 0
3 years ago
Mary bought three flowering plants for her garden. The first one has red tubular flowers filled with nectar; the second one has
uranmaximum [27]
I would say that the first flower attracts birds etc. t go and drink it's nectar (also I know that humming birds are attracted to red), and thus spread it's pollen. The second flower most likely attracts bees seeing how t is also sweetly scented, but has no nectar. This must mean that it only has pollen, which bees are great at spreading! I have no clue about the last one....Maybe bugs or bats?? Those are the only other pollinators I know of. It could possibly be that there is no pollinator for the third flower and it just tries to keep animals and insects from eating it with it's shape and odor and just relays on the wind for pollination.<span />
6 0
3 years ago
Some autoimmune disorders are thought to be caused by _________, which occurs when an infectious agent is composed of antigens w
EastWind [94]

Answer: adaptive immune response

Explanation:

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The exact cause of autoimmune disorders is unknown and hence it is  thought that it is caused by adaptive immune response which builds against self antigens and causes damage to the cells.

Hence, some autoimmune disorders are thought to be caused by adaptive immune response.

4 0
3 years ago
If one DNA strand reads AATCGGTTA, what will be the<br> sequence of the complementary strand?
SVEN [57.7K]

Answer: TTAGCCAAT

Explanation:

7 0
3 years ago
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