Answer:
Places and location.
Explanation:
In gymnosperms, the pollen and the megaspores are produced in separate places. Megaspores made in cones that develop into the female gametophytes that is present inside the ovules of gymnosperms, while pollen grains develop from cones that produce microspores. while on the other hand, In angiosperms, the pollen and the megaspores are produced in separate structures, but within the same place i.e. flower which has both male and female reproductive organs.
Answer:
When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity. This area is called an escape pacemaker.
Explanation:
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Answer:
a. You record the air temperature every day for a week.
Explanation:
Recording air temperature every day for a week can be classified as making an observation.
Observation is a part of the scientific method. It is a basically a way of collecting data.
- During observation, our senses can be used or instruments.
- Depending on the nature of the study, specialized instruments helps to bridge the limitations of our senses.
- A good scientist is a keen observer.
- Making a record of air temperature usually by using a thermometer is a way of carrying out observation.
When you record air temperature, you are making an observation.
Photosythesis is carried on in the Chloroplasts, in this diagram i believe the Chloroplasts are (D).
