The liquid that contains male gametes and secretions from glands of the human male reproductive system is known as the?

1) progesterone

2) testosterone

3) semen

4) sperm

Which of these statements is true? All environmentalists are scientists. Ecologist and environmentalist mean the same thing. An environmentalist wishes to preserve the environment. All scientists are ecologists.

You are a defense attorney representing the accused. Your client has been shown to have the same blood type as that found at the scene of the crime. Explain to the jury why this information alone is not enough to convict your client.

It is possible for an organism to do everything well. True False

Which of the following represents change to an ecosystem brought about by abiotic factors? a. the decrease in plant populations due to a decrease in the available water supply b.

What could be a result of eutrophication of nitrogen?

If there is a mutation, and the wrong amino acid is put into sequence, what is the result?

What is tolerance (explanation)

Which actions should a nurse take while caring for a preschooler whose blood lead level is found to be 25 mcg/dl? select all that apply?

Sodium benzoate is a bitter chemical often used in tiny amounts as a food preservative. The ability of humans to taste sodium benzoate is caused by a dominant allele, t. The recessive allele ("non-taster") is n.

Which of the following correctly displays the sequence of developmental milestones? A) blastula → gastrula → cleavageB) cleavage → gastrula → blastulaC) cleavage → blastula → gastrulaD) gastrula → blastula → cleavage