<span>In the question,'when a doctor is able to determine the sex of the foetus, during an ultrasound scan, what stage of development is the foetus in, the correction option is D, that is, the second trimester. Human pregnancy usually lasts for an average of nine months. The nine months are divided into three parts of three months each called trimester. The first trimester is made up of the first week of the pregnancy to the twelfth week. During this period, the foetus is just developing and can not be picked up easily by an ultrasound scan, but by the second trimester, which is week thirteen to week twenty four, the foetus would have develop enough to be picked up by the ultrasound scan. At this stage, the doctor can easily determine the sex of the foetus whether it is a boy or a girl.</span>
Answer:
without these proteins(RNA) , the DNA would not happen
Explanation:
hope it helps
I’d say c makes sense , because b is talking about what’s happening not what WILL happen ,
No we’re not because something horrible can go wrong
Answer:
Explanation:
Nitrogen fixation is a process of fixation of atmospheric nitrogen into forms of nitrogen that can be directly utilized by the plants like nitrates and nitrites. This process is conducted by the soil bacteria.
The farmers rotate the crops with legumes because the roots of legumes shows symbiotic mutualistic association with nitrogen fixing soil bacteria. The soil get rich with the nitrogen element necessary for growth of plants.