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Hitman42 [59]
3 years ago
10

Bt corn is a genetically modified crop that contains a gene from another species. Which characteristic does this gene give the p

lant
A. Sweeter flavor
B. Drought tolerance
C. Taller stems
D. Insect resistance
Biology
2 answers:
Angelina_Jolie [31]3 years ago
7 0

The right answer is D.

The effectiveness of BT-Corn compared to conventional insecticide treatment  is very much higher:

* The plant itself produces the toxin that blocks the digestion of or target insects: the entire plant is protected where a treatment (out of neonicotinoids, very expensive and reserved to the seed treatment) allows only a protection of surface and must be renewed several times.

* The selectivity of the treatment is very superior: each variant of the BT molecule targets only a family of insects but we do not know the impact of their cumulative effects in the environment.

grin007 [14]3 years ago
5 0

Answer:

D

Explanation:

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which of the following states that heritable factors (genes) retain their identity generation after generation?
Mandarinka [93]

Answer:

particulate hypothesis of inheritance

Explanation:

This states that the inheritable factors retain their identity generation after generation.

7 0
3 years ago
A small number of finches live in a protected bird sanctuary. Natural selection
Vlad [161]

Answer:

Natural selection  is least likely to occur in this population if:

  • The resources are continuously available

For a species to survive in an area, it is essential that the place has enough resources like nutrients, space, water etc. If these resources are available then there will be less chances of competition which will lead to lesser chances of natural selection.

  • The number of of death rates is equal to the number of of birth rates

In an balanced ecosystem, the number of birth rates is equal to the number of death rates for a population. If the number of death rates is lesser to the number of birth rates then the competition for resources will lead to natural selection.

7 0
3 years ago
Need help quick!! This picture ask all of it
n200080 [17]
Atoms with a covalent bond
5 0
3 years ago
Help Asap. i also need explanations to go with the answer
nlexa [21]

Answer:

D. In an ocean heated by volcanic activity

Explanation:

Most of Earth was covered in water, early organisms weren't evolved enough to walk on land at the time. There are some organisms that feed off of volcanic activity and use it as an energy resource and would adapt to the heat.

<em>"Hot spots create volcanoes on the seafloor. If these volcanoes rise above sea level to become islands, and if they occur in tropical waters, coral reefs will form on them. Since the volcanoes are cones, the reef forms in a circle around the volcano."</em>

<em>-</em><u>https://courses.lumenlearning.com/earthscience/chapter/ocean-organisms/</u>

<em>"Discovered only in 1977, hydrothermal vents are home to dozens of previously unknown species. Huge red-tipped tube worms, ghostly fish, strange shrimp with eyes on their backs and other unique species thrive in these extreme deep ocean ecosystems found near undersea volcanic chains."</em>

<em>-</em>https://ocean.si.edu/ocean-life/invertebrates/hydrothermal-vent-creatures

7 0
3 years ago
Differentiate between respiration in the presence and absence of oxygen ​
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Answer:

breakdown of glucose in the absence of oxygen to produce energy is called as anaerobic respiration. Aerobic respiration occurs in the cytoplasm to mitochondria, while anaerobic respiration occurs in the cytoplasm only.

Explanation:

7 0
2 years ago
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