Answer:
they cannot be repeated
Explanation:
A historical event can not be repeated so that it is possible to study it. For this reason, when studying a historical event it is necessary to search for documents that speak about that event in a consensual way. For this reason, we can see that the conclusions related to historical events are limited to the subjective evaluation that will vary according to the judgment of each person.
B) the end point
Answer:
The direction is missing here.
Explanation:
It is given that,
Veronica's velocity, v = 4.3 m/s
Distance, d = 20 m
Time taken, t = 4.7 s
The velocity of an object is defined as the net displacement divided by total time taken.
We need to find the missing information. We know that velocity is a vector quantity i.e. it has both magnitude and direction. Here, only magnitude of velocity is given but the direction is missing. So, the correct option is (a) " the direction".
The differing environmental conditions at different altitudes on a mountain lead plants to develop specific adaptations to those conditions. These adaptations can cause variations in characteristics of plant species across altitudes. Such variations may also signal potential speciation events.
Plants found at different elevations on a mountain differ due to adaptions to varying environmental conditions. The primary differences in environmental conditions can be attributed to three main factors - differences in temperature, light and atmospheric pressure across varying altitudes. As one climbs up a mountain, the temperature typically decreases, light intensity may vary, rainfall patterns may change, and atmospheric pressure decreases.
Plants adapt to these variable conditions in several ways. For instance, high altitude plants might develop adaptations to survive colder temperatures, stronger winds, and more intense UV radiation. They might have smaller leaves to reduce water loss, thicker cuticles to handle UV radiation, and can grow closer to ground to escape wind damage. On the other hand, plants at lower altitudes may have broader leaves to capture more sunlight, deeper roots systems to access water resources, and they can afford to invest more resources in growth, as opposed to survival mechanisms.
Observed differences in plant species across altitudes can also suggest potential speciation events, where the separation of populations by altitude leads to the development of new species over time. A possible way to ascertain this would be to observe whether, when grown in the same environment, high-altitude plants respond to low altitude in the same way that low-altitude plants do, and vice versa. This could indicate whether the observable differences are primarily due to environmental factors or genetic variation.
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Hello,
A molecule is
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
I hope this helps
When atoms are considered most of the mass lies in the nucleus which has neutrons and protons. Hence the statement is true because on comparing weight of neutron and proton to the mass of electron, mass of electron will be negligible.
The mass {atomic} of any material is actually the mass we get on adding masses of proton and neutron. Electrons are about 104 kg are lighter than the mass of proton Neutron in the mass of proton and neutron and nearly equal to each other.
Answer:
An atomic nucleus contains most of the atom’s mass.
Explanation:
I took the assignment.