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Fed [463]
3 years ago
13

The pre-australopiths lived around how many millions of years?

Biology
1 answer:
elena55 [62]3 years ago
3 0

Answer:

approximately 4.1 and 1.4 million years

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a specfic mutation in a certain animal leads to abnormal development of the heart and kidney, resulting in miscarriage. Why did
Otrada [13]

Answer:

These kinds of mutations are referred to as Lethal mutations

Explanation:

This type of mutation deleteriously affects the vital genes that are responsible for the core functions of the body. The heart supplies blood to the body organs for nutrients and oxygen while kidneys filter out toxins and end products of metabolism. Mutations in genes for development of these organs will be deadly.

5 0
3 years ago
Question 7 (1 point)
aleksandr82 [10.1K]

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d

Explanation:

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Which phyla move by using pseudopodia?
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✦ ✦ ✦ Beep Boop - Blu Bot! At Your Service! Scanning Question . . . Code:  

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  Answer: I believe the answer is Euglenophyta  

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4 0
2 years ago
2. Which of the following is not considered an
Andreas93 [3]

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a. an oak leaf

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3 0
2 years ago
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Hello, people of planet earth, I need help with a question for my friend Steve in science class, here on planet Neptune it is pr
ICE Princess25 [194]
The paramecium has two nuclei, a big and small one. The big one operates as the director of the cell's activities, rather like a little brain. The smaller one is used for reproduction. The paramecium splits in half (fission) just as the ameba does. First the smaller nucleus splits in half and each half goes to either end of the paramecium. Then the bigger nucleus splits and the whole paramecium splits. Occasionally two paramecium exchange material and form a new paramecium. This is called conjugation. 

<span>Conjugation in Paramecia occurs in the following way: </span>

<span>a). The formation of ciliary contacts. </span>
<span>b). Local loss of cilia and formation of narrow contacts between anterioventral somatic cell membranes </span>
<span>c). Formation of small cytoplasmic bridges (which allow for the exchange of molecular components only). </span>
<span>d). Their enlargement enables the cells to exchange micronuclei. </span>

<span>Bacteria exchange plasmid material and the Paramecia exchange micronuclei.

Good luck to Steve! How is it in Neptune? XD</span>
6 0
3 years ago
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