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Verizon [17]
2 years ago
11

Does Oxygen have a cation or anion?

Biology
1 answer:
yaroslaw [1]2 years ago
7 0

Answer:

Explanation:

I think its anion

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Sea urchins belong to the echinoderm phylum. Adult sea urchins have spines that extend outward from their exoskeleton, but as la
Ivahew [28]

Complete question:

Sea urchins belong to the echinoderm phyla. Adult sea urchins have spines that extend outward from their exoskeleton, but as larvae, the sea urchins have only an exoskeleton made from spicules. The spines offer protection against predators. Sea urchins typically spawn near the surface. Males release sperm into floating plankton, then female urchins release between eight and 20 million eggs in the same area. The jelly-like coating on the eggs attracts the sperm, and when the two meet, they create an embryo that starts dividing into new cells within minutes.

Based on the information the population size of sea urchins is low in relation to the carrying capacity of the area. As a result, the sea urchins are

A) r-strategists that allocate much energy toward parental care.

B) r-strategists that allocate energy to producing many young.

C) density-independent because there is plenty of energy.

D) irruptive, because their numbers crash quickly.

Answer:

B) r-strategists that allocate energy to producing many young.

Explanation:

According to the given information, this species expresses survival curve type III, characteristic of r-strategists. Males and females release many gametes into the sea. If these gametes get to meet, they produce the embryo that starts developing. But there are high chances for these new organisms to die. Significant mortality during the early stages of life is expected for the species. The few individuals that manage to reach the later life stages, getting to survive, usually have a long life. These species produce many gametes to release, which results in the production of many offspring simultaneously. However, adult individuals provide no parental care. Their success in reproduction depends on the number of surviving descendants.

  • Males release sperm into floating plankton,
  • Female urchins release between eight and 20 million eggs in the same area,
  • When they meet, sperm and egg create an embryo that starts dividing into new cells within minutes.

We might also mention that the population size is under the carrying capacity. r-strategist choose to live in areas with only a few individuals, where nitches are hardly occupied.

5 0
2 years ago
In relation to the sheep brain, which of the following is true?
Sergeeva-Olga [200]

Answer:

Option E, All of the above

Explanation:

The brain of human is bigger than the brain of sheep. The cerebellum in human is bigger than the sheep and due to this reason the humans have more complex learned behaviors with more motor control and high learning abilities. This enable humans to develop speech and language function properly.

However, the olfactory bulb is larger in the sheep’s brain to ensure that it uses its senses such as smell and feel effectively.

Hence, option E is correct

5 0
2 years ago
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