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vovikov84 [41]
2 years ago
15

How did early land animals differ from those common today?

Biology
1 answer:
Zinaida [17]2 years ago
3 0

Answer:

Early land animals had both lungs AND gills, and their bodies consisted of few hard parts. Meaning they lacked things like an exoskeleton for instance. Animals today have either lungs OR gills and many have protecting hard parts of their bodies.

Explanation:

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What are some changes that farmers could have made to their agricultural practices to avoid the Dust Bowl?
cricket20 [7]

Answer:

Other helpful techniques include planting more drought-resistant strains of corn and wheat; leaving crop residue on the fields to cover the soil; and planting trees to break the wind.

4 0
3 years ago
T is tall while t is short. Choose all the genotype(s) for tall individuals.
Furkat [3]

Answer:

Option (A), (C) and (D).

Explanation:

The concept of law of dominance was explained by Mendel while working on the pea plant <em>Pisum sativum. </em>According to this law, the trait which is able to express itself even in hetrozygous condition, the trait is called dominant trait. The trait that are unable to express itself, the trait is called recessive trait.

Here, T means tall and t is short. T shows the dominant trait whereas t is recessive trait. T trait can express itself in heterozygous condition as well. So, TT, Tt and TTTT shows the tall individuals and tt is short individual.

Thus, the correct answer is option (A), (C) and (D).

5 0
3 years ago
Millions of years ago, the Sierra Nevada region began to be uplifted along a crack in Earth's crust. The region on the other sid
BabaBlast [244]
D. Fold mountain that appeared wavy I think but just in case check an other answer
7 0
3 years ago
How did endosymbiosis impact the structural differences between bacteria, animals, plants and fungi?
Furkat [3]

Answer:DNA, RNA, Ribosomes and Protein Synthesis

This provided the first substantial evidence for the endosymbiosis hypothesis. It was also determined that mitochondria and chloroplasts divide independently of the cell they live in.

Explanation:

<em>What role did endosymbiosis play in the evolution of eukaryotes? Endosymbiosis led to the evolution of eukaryotic cells with mitochondria and chloroplasts. This kind of natural selection led to the evolution of eukaryotic cells and the plants and animals we see today.</em>

4 0
3 years ago
When the charge inside the cell returns to the resting potential following depolarization, it is called:
scZoUnD [109]

Answer:

Repolarization

Explanation:

Repolarization refers to the phase during which the resting potential is restored after depolarization. This means that the inside of the axon membrane becomes negative again compared to the outside.

Repolarization is obtained by the functioning of K+ ion channels. The opening of K+ ion channels allows the K+ to move outside of the axon. Movement of positively charged ion (K+) outside of axon makes the inside negative again and the resting potential is restored.

5 0
3 years ago
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