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topjm [15]
3 years ago
13

What is the difference between cross-sectional and longitudinal research?

Biology
2 answers:
Oksi-84 [34.3K]3 years ago
7 0
I think the answer is either B or C, hope this helps! Sorry if it doesn't!
Marina86 [1]3 years ago
5 0
I belive it is b hopefully this helped
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Select the layers of Earth that are completely solid. A. crust B. inner core C. outer core D. lower mantle E. asthenosphere
melisa1 [442]

Answer:

The correct answer would be A. crust.

The crust is the outermost layer of the earth which is composed of different types of rocks such as sedimentary, metamorphic, and igneous rocks.

It is completely solid and can be broadly classified into two types: continental crust and oceanic crust.

The thickness of the oceanic crust is about 5 km to 10 km. It is primarily composed of basalt, gabbro, and diabase.

The thickness of the continental crust is around 30 km to 50 km.  

The crust forms lithosphere along with hard and upper mantle.

4 0
3 years ago
Read 2 more answers
Read the overview and complete the interactivities that follow. The lac operon consists of a series of genes involved in the bre
Ber [7]

Answer:

1 True 2 false 3 false 4 true  5  true

Explanation:

1 The Lac I gene makes repressor protein  True

2 The structural genes encoded by lac operon are involved in lactose synthesis  false

3 The CAP protein is an activator protein that binds to the operator false

4 The product of Lac I is an allosteric protein that can undergo conformational change when allolactose binds to it  True

5 CAP binding causes DNA to bend facilitating RNA polymerase binding True

4 0
3 years ago
. How long has it taken barren rock to become paradise?
Simora [160]

Answer:

Volcanoes are created over approximately 10,000-500,000 years by thousands of eruptions -- each lava flow covering the one before it. In the case of oceanic island volcanoes, lava erupts first from fissures, or cracks, on the deep ocean floor. The flows continue to build up and finally an island emerges from the sea.

Explanation:

i licked it up... ;-)

4 0
3 years ago
Cells must be able to perform certain functions in order to survive. Which of the following must all cells do to survive?
just olya [345]

Answer:

3.

Explanation:

7 0
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harkovskaia [24]

Meta-population is the patchiness of population in space and its role is dynamic, population insatiability, coexistence of species, the maintenance of diversity.

Metapopulation is colonization and extinction dynamics. The variable of prime concern is the proportion.As the population largest approaches the environment carrying resources become more scare and growth rate slows.

The m maxima carrying number of species in environment can support indefinitely .A group of spatially separated population of similar organism which interact at some levels.It s population in which multiple populations as butterflies and cool reef fishes.Humans are evolved from multiple interconnected spread out across Africa in large meta-population.

To learn more about Metapopulation here

brainly.com/question/2167013

#SPJ4

6 0
2 years ago
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