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scZoUnD [109]
2 years ago
12

Can you please give me science project ideas that at least 2 weeks, with materials easy to find and that is in the difficulty of

9-10th grade?
Biology
1 answer:
lidiya [134]2 years ago
6 0
What kind of science project?? Like an experimental one???
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In which ways is photosynthesis important to life on Earth? Check all that apply. makes food for all organisms. adds oxygen to t
ladessa [460]

The right options are; makes food for all organisms, adds oxygen to the atmosphere, is a source of medicines and fibers, is a source of building materials and it provides animal habitat.

Photosynthesis is a process by which green plants and some other autotrophs use light energy in chloroplasts to generate carbohydrates (food) from carbon dioxide and water while oxygen is being released as a by-product. Photosynthesis is essential to all living organisms on earth because it is the main source of oxygen in the atmosphere. Photosynthesis provides animal habitat, it provides food for all organisms (directly for plants and indirectly for animals). Plants and trees produce their foods through photosynthesis and are used as medicines and fibers, and as building materials.  

3 0
2 years ago
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Do you think smoking has negative effect on fetal development?
n200080 [17]

Smoking during pregnancy affects your and your baby's health before, during, and after your baby is born. The nicotine (the addictive substance in cigarettes), carbon monoxide, lead, arsenic, and numerous other poisons you inhale from a cigarette are carried through your bloodstream and go directly to your baby. Smoking while pregnant will:

<span>Lower the amount of oxygen available to you and your growing babyIncrease your baby's heart rate<span>Increase the chances of miscarriage and stillbirth</span>Increase the risk that your baby is born prematurely and/or born with low birth weightIncrease your baby's risk of developing respiratory problems</span>

The more cigarettes you smoke per day, the greater your baby's chances of developing these and other health problems. There is no "safe" level of smoking for your baby's health.

8 0
3 years ago
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Which term describes body structures in different organisms that have different outward appearances but develop from the same em
Nataly [62]

Answer:

The correct answer would be B) homologous.

Homologous organs refer to the set of organs which have different appearance and function but share common anatomy due to common ancestry.

For example, the forearm of human, forelimb of the horse, wing of a bat, wings of birds, and seal's flipper share common underlying anatomy.  They are made up of same sets of bones (humerus, radius, ulna, carpels, metacarpals, and phalanges).

These organs are adapted to perform different functions in an environment.

It is also observed that these organs developed in the same manner in the embryo and from similar origins.

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3 years ago
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Emotional memory ________.
suter [353]

Answer:

The correct answer will be option-A

Explanation:

Emotional memory refers to the memories of experiences which evokes or triggers the emotional reaction in higher organisms.

Emotional memory after evoking the emotional reactions remembers the past experiences based on which the person feels if the present event is pleasant or unpleasant.

The pounding of the heart is caused by the shock or the stress conditions observed with the fast beating of the heart. In the given question, When the heart pounds after seeing the rattlesnake will be considered response caused by the emotional memory as the rattlesnake is dangerous to humans based on the past experiences which evoke the emotional response.

Thus, option-A is the correct answer.

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3 years ago
What does a plant need before photosynthesis can happen? (check all that apply)
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I think the answer is B,A,E
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